Thiol derivative dyes (07-Jan-2010)

THIOL DERIVATIVE DYES

The present invention relates to novel thiol derivative dyes, compositions thereof, to processes for their preparation and to their use for the dyeing of organic materials, such as keratin fibers, wool, leather, silk, cellulose or polyamides, especially keratin-containing fibers, cotton or nylon, and preferably hair, more preferably human hair.

It is known, for example, from WO 95/01772 that cationic dyes can be used for the dyeing of organic material, for example keratin, silk, cellulose or cellulose derivatives, and also synthetic fibers, for example polyamides. Cationic dyes exhibit very brilliant shades. A disadvantage is their unsatisfactory fastness to washing.

The technical problem is to provide dyes that are distinguished by deep dyeing having good fastness properties with respect to washing, light, shampooing and rubbing.

Accordingly, the present invention relates to compounds of formula

[Image Omitted]

wherein

• L₁ is hydrogen; C₁-C₁₂alkyl; or phenyl-C₁-C₄alkyl;
• X is C₁-C₁₂alkylene, C₂-C₁₂alkenylene, C₅-C₁₀cycloalkylene, C₅-C₁₀arylene, or C₅-C₁₀arylene-C₁-C₁₀alkylene, which may by interrupted by —O—, —NH—, —S—, —CO—, o-SO₂—;
• Y is the residue of an organic dye
• Z is a group of formula

[Image Omitted]

or —C≡N; wherein

• A is O; S; or N-L₂;
• B is L₃; —OL₃; —NL₃L₄; or —SL₃; and
• L₂, L₃ and L₄, independently from each other are hydrogen; C₁-C₁₂alkyl; C₆-C₁₂aryl; or C₆-C₁₂aryl-C₁-C₁₂alkyl.

C₁-C₁₄alkyl is for example, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, 2-pentyl, 3-pentyl, 2,2′-dimethylpropyl, cyclopentyl, cyclohexyl, n-hexyl, n-octyl, 1,1′,3,3′-tetramethylbutyl or 2-ethylhexyl, nonyl, decyl, undecyl or dodecyl.

C₁-C₁₂alkylene is for example methylene, ethylene, propylene, isopropylene, n-butylene, sec-butylene, tert-butylene, n-pentylene, 2-pentylene, 3-pentylene or 2,2′-dimethylpropylene, n-hexylene, n-octylene, 1,1′,3,3′-tetramethylbutylene, 2-ethylhexylene, nonylene, decylene, undecylene or dodecylene.

Alkylene may be straight-chain, branched, or, from C₅alkyl upwards, monocyclic or polycyclic, and may be interrupted by hetero atoms, such as such as O, S, —CO—, N, NH, NR₅₄, —OCO—, —CO(OR₄)—, —CONR₄—, —(R₅)NC(O)—; for example C₁-C₁₀alkylene may be a resisue such as: —CH₂CH₂—O—CH₂CH₂—O—CH₂CH₂—, —CH₂CH₂—O—CH₂CH₂—, —CH₂CH₂—O—CH₂—, —CH₂—O—CH₂—, —CH₂CH₂—CH₂CH₂—O—CH₂—CH₂—, —CH₂CH₂—CH(N(CH₃)₂)—CH₂—CH₂—, CH₂—NH₂—CH₂—CH₂, —CH₂CH₂—NH—CH₂CH₂—, —CH₂CH₂—NCH₃—CH₂CH₂—, —CO—CH₂—, —CH₂CO—, —CH₂CH₂—NHCO—CH₂CH₂—, —CH₂CH₂—CONH—CH₃—CH₂CH₂—, —CH₂CH₂—NCH₃CO—CH₂CH₂—, —CH₂CH₂—CONCH₃—CH₃—CH₂CH₂—, —CH₂—NHCO—CH₂CH₂—, or —CH₂CH₂—NHCO—CH₂—, —CH₂CH₂—CONH—CH₂— or —CH₂—CONH—CH₂CH₂—.

C₅-C₁₀cycloalkylene is for example cyclopentylene, cyclohexylene, cycloheptylene, cyclooctylene, cyclononylene or cyclodecylene.

C₅-C₁₀arylene is for example phenylene or naphthylene.

Aryl-alkylene is for example C₅-C₁₀aryl-C₁-C₁₀alkylene.

Alkyl-arylene is for example C₁-C₁₀alkyl-C₅-C₁₀arylene.

Preferably, in the compounds of formula (1)

X is C₁-C₁₂alkylene; and more preferably
X is ethylene.

Preferably, in the compounds of formula (1)

• Y is selected from are selected from the group of anthraquinone, acridine, azo, azomethine, dioxaxin, hydrazomethine, benzodifuranone, coumarine, diketopyrrolopyrrol, dioxaxine, diphenylmethane, formazane, indigoid, indophenol, naphtalimide, naphthaquinone, nitroaryl, merocyanine, methine, oxazine, perinone, perylene, pyrenequinone, phtalocyanine, phenazine, quinoneimine, quinacridone, quinophtalone, triphenylmethane, xanthene, thiazine dye, thioxanthene and direct dyes.

More preferably,

• Y is selected from a nitroaryl, an anthraquinone, a naphthoquinone, a pyrenequinone, a phathylocyanine, formazan, a methine, an azomethine, a dioxacin, a phenazine, an azo, an indophenol, a triphenylmethane, a xanthene, a thioxanthene and a cationic direct dye.

In particular,

Y is a radical of formula

[Image Omitted] [Image Omitted]

wherein the mixture comprises at least two compounds of formula (1), and/or at least two compounds of formula (2) and/or at least one compound of formula (1) and at least one compound of formula (2), wherein

• R₁, R₂ and R₃ independently from each other hydrogen; halogen; C₁-C₁₆alkyl, which is saturated or unsaturated, linear or branched, substituted or unsubstituted, or interrupted or uninterrupted with heteroatoms; phenyl, which substituted or unsubstituted; a carboxylic acid radical; sulfonic acid radical; hydroxy; nitrile; C₁-C₁₆alkoxy, (poly)-hydroxy-C₂-C₄-alkoxy; halogen; sulfonylamino; SR₃₃; NR₃₃R₃₄; OR₃₃; SO₂; COOR₃₃; NR₃₃COR₃₄; or CONR₃₃;
• Q₁ is a bivalent radical selected from —N═N—; —CR_d═N—; —N═CR_d—; —NR_d—N═CR_e—; and —R_dC═N—NR_e—;
• T₁ is a bivalent radical of an aromatic or heteroaromatic substituted or unsubstituted compound;
• R_d and R_e independently from each other are hydrogen; unsubstituted or substituted C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₅-C₁₀aryl; C₁ C₁₀alkyl-C₅-C₁₀aryl; or C₅-C₁₀aryl-C₁-C₁₀alkyl;
• R₃₃ and R₃₄ independently from each other are hydrogen; C₁-C₁₂alkyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅-alkoxy, hydroxy or —(CO)—H; —(CO)—C₁-C₅alkyl; phenyl or phenyl-C₁-C₄alkyl, wherein the phenyl moiety may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂, carboxy or hydroxy;
• R₄, R₅ and R₆ independently from each other are hydrogen; C₁-C₂₀alkyl or C₁-C₂₀alkoxy, which may be substituted by one or more C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂ or hydroxy; C₃-C₆cycloalkyl; —C(O)H; —C(O)—C₁-C₅alkyl; halogen; NO₂; OH; phenyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂ or hydroxy; or a radical of formula —NR₃₅R₃₆;
• R₃₅ and R₃₆ independently from each other are hydrogen; C₁-C₁₂alkyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅-alkoxy, hydroxy or —(CO)—H; —(CO)—C₁-C₅alkyl; phenyl or phenyl-C₁-C₄alkyl, wherein the phenyl moiety may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂, carboxy or hydroxy;
• R₇, R₈, R₉ and R₁₀ independently from each other are hydrogen; C₁-C₂₀alkyl; C₁-C₂₀alkoxy; C₃-C₆cycloalkyl; halogen; NO₂; OH; SH; or a radical of formula

[Image Omitted]

• X₁ is C₁-C₁₈alkylene; —(CO)—C₁-C₁₈alkylene C₁-C₁₈arylene; C₆-C₁₈arylene-C₁-C₁₂alkylene; or —(OCH₂CH₂)_n2—O—;
• T₂ is a radical of formula

[Image Omitted]

or —O—(X₃)_s;

• Q₂ is a cationic biradical of a saturated, aromatic or heteroaromatic group; or a radical of formula

[Image Omitted]

• R_f, R_g and R_h independently from each other are hydrogen; C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₆-C₁₀aryl; C₆-C₁₀aryl-C₁-C₁₀alkyl; or C₁-C₁₀alkyl(C₅-C₁₀aryl);
• X₂, X₃ and X₄ independently from each other are C₁-C₁₈alkylene; —(CO)—C₁-C₁₈alkylene-C₁-C₁₈arylene; C₆-C₁₈arylene-C₁-C₁₂alkylene; or —(OCH₂CH₂)_n1—O—;
• p is 0; or 1
• R₃₇ is hydrogen; or C₁-C₂₀alkyl;
• R₃₈, R₃₉ and R₄₀ independently from each other are hydrogen, C₁-C₂₀alkyl, C₄-C₁₂cycloalkyl, C₆-C₁₃aralkyl; phenyl-C₁-C₅alkyl; or R₃₈ and R₃₉ together with the linking nitrogen atom form a C₄-C₁₂-membered heterocyclic ring which may be interrupted by one or more than one —O— or —NH— goups;
• u is 0 or 1;
• n₁ and n₂ independently from each other are a number from 1 to 5;
• s is 0; or 1;
• t is 0; or 1;
• R₁₁, R₁₂ and R₁₃ independently from each other are hydrogen; C₁-C₂₀alkyl or C₁-C₂₀alkoxy, which may be substituted by one or more C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂ or hydroxy; C₃-C₆cycloalkyl; —C(O)H; —C(O)—C₁-C₅alkyl; —C(O)OH; —C(O)O—C₁-C₅alkyl; halogen; NO₂; OH; SH; phenyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂ or hydroxy; or a radical —NR₄₁R₄₂;
• Q₃ is —C(O)—; —C(O)O—; —OCO—; —N(R_i)—X₅—; —CON(R_i)—; —(R_i)NC(O)—; —O—; —S—; —S(O)—; or —S(O)₂—;
• T₃ is the direct bond;

[Image Omitted]

or a cationic biradical of a saturated, aromatic or heteroaromatic group;

• R_i, R_k, R_l independently from each other are C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₆-C₁₀aryl; C₆-C₁₀aryl-C₁-C₁₀alkyl; or C₁-C₁₀alkyl(C₅-C₁₀aryl);
• R₄₁ and R₄₂ independently from each other are hydrogen; C₁-C₁₂alkyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅-alkoxy, hydroxy or —(CO)—H; —(CO)—C₁-C₅alkyl; phenyl or phenyl-C₁-C₄alkyl, wherein the phenyl moiety may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂, carboxy or hydroxy; or a radical of formula

[Image Omitted]

wherein at least one of the radicals R₁₁, R₁₂ or R₁₃ is NO₂;

• R₄₃, R₄₄ and R₄₅ independently from each other are hydrogen; C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₆-C₁₀aryl; C₆-C₁₀aryl-C₁-C₁₀alkyl; or C₁-C₁₀alkyl(C₅-C₁₀aryl);
• X₅ is the direct bond; C₁-C₁₀alkylene; C₅-C₁₀cycloalkylene; C₅-C₁₀arylene; or C₅-C₁₀arylene-(C₁-C₁₀alkylene);
• R₁₄ is N⁺R₄₆R₄₇;
• R₄₆ and R₄₇ independently from each other are hydrogen; C₁-C₁₂alkyl; or phenyl-C₁-C₄alkyl; or
• R₄₆ and/or R₄₇ are a bivalent C₃-C₆alkylene radical which is linked to the carbon atoms C¹ or C² in formula (1e) respectively and, together with the linking nitrogen atom form a 6 to 16-membered carbocyclic ring;
• R₁₅ is NR₄₈R₄₉; or OR₄₈;
• R₄₈ and R₄₉, independently from each other are hydrogen; C₁-C₁₂alkyl; or phenyl-C₁-C₄alkyl; or
• R₄₈ and R₄₉ are a bivalent C₃-C₆alkylene radical which is linked to the carbon atoms C³ or C⁴ in formula (1e) respectively and, together with the linking nitrogen or oxygen atom form a 6 to 16-membered carbocyclic ring; or
• R₄₈ and R₄₉ together with the linking nitrogen atom form a 4 to 8 membered carbocyclic ring;
• R₁₆, R₁₇, R₁₈, R₁₉ and R₂₀ independently form each other are hydrogen; C₁-C₁₂alkyl; halogen; NR₅₀R₅₁; or a radical of formula

[Image Omitted]

• R₅₀ and R₅₁ independently from each other are hydrogen; C₁-C₁₂alkyl; phenyl-C₁-C₄alkyl; or a radical of formula

[Image Omitted]

• V₁ is —O—; or —NR₅₃;
• R₅₂ and R₅₃ independently from each other are hydrogen; or C₁-C₅alkyl;
• Hal is a halogen atom; and wherein at least one of R₁₆, R₁₇, R₁₈, R₁₉ and R₂₀ is hydrogen;
• B₂ and B₃, independently from each other are C₆-C₁₀aryl; or a 5-7-membered heterocyclic compound, which may be substituted by C₁-C₁₂alkyl, C₁-C₁₂alkoxy, phenyl, hydroxy, halogen, sulfonic acid, carboxylate, or by the radical —NR₅₄R₅₅ or —OR₅₆;
• B₄ is C₆-C₁₀arylene, or a bivalent radical of a 5-7-membered heterocyclic compound, which may be substituted by C₁-C₁₂alkyl, C₁-C₁₂alkoxy, phenyl, hydroxy, halogen, sulfonic acid, carboxylate, or by the radical —NR₅₄R₅₅ or —OR₅₆;
• R₅₄, R₅₅ and R₅₆ independently from each other are hydrogen; or C₁-C₁₂alkyl, which may be substituted by hydroxy or C₆-C₁₀aryl; or
• R₅₄ and R₅₅ together with the linking nitrogen atom form a 5 to 7 membered heterocyclic ring;
• R₂₁ and R₂₂ independently from each other are hydrogen; C₁-C₂₀alkyl; C₁-C₂₀alkoxy; C₃-C₆cycloalkyl; C₅-C₁₀aryl; anellated aromatic groups; carboxylate; or sulfonate groups;
• R₂₃, R₂₄, R₂₅ and R₂₆ each independently from each other are hydrogen; unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C₁-C₁₄alkyl, C₂-C₁₄alkenyl, C₆-C₁₀aryl, C₆-C₁₀aryl-C₁-C₁₀alkyl or C₅-C₁₀alkyl(C₅-C₁₀aryl); or
• R₂₃ and R₂₄ and/or R₂₅ and R₂₆ together with the linking nitrogen atom form a 5 to 7 membered carbocyclic ring which may contain one or more than one hetero atom; or
• R₂₃ is linked to C₁ together with N⁺ forming a 5-7 membered carbocyclic ring; or
• R₂₄ is linked to C₂ together with N⁺ forming a 5-7 membered carbocyclic ring;
• G₁ and G₂ independently from each other are N; —O—; —S—; or a radical of CR₆₄;
• R₅₇ is hydrogen; C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₆-C₁₀aryl; C₅-C₁₀aryl-(C₁-C₁₀alkyl); or —C₁-C₁₀alkyl(C₅-C₁₀aryl);
• r is 0; or 1; and
• An is an anion

Most preferably,

Y is a radical of formula

[Image Omitted]

wherein
R₁, R₂, Q₁ and T₁ independently from each other are defined as in formula (1).

Preferably, in the compounds of formula (1)

• Z is selected from the radicals of formulae

[Image Omitted]

or (1b₈) *—CΞN; wherein

• L₃ and L₄ are defined as in formula (1).

Examples of compounds of the present invention are represented In the table 1 below:

TABLE 1
Exemplified compounds of the present invention
[Image Omitted]

Compound
of formula	Y	L1	X	Z

(3)	[Image Omitted]	H CH3 C2 H5	—CH2—CH2—	—(CO)H —(CO)CH3 —(CO)C6 H5
(4)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)H —(CO)CH3
(5)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)H —(CO)CH3
(6)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)H —(CO)CH3
(7)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)H —(CO)CH3
(8)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)H —(CO)CH3
(9)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)H —(CS)CH3
(10)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)H —(CS)CH3
(11)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)H —(CS)CH3
(12)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)H —(CS)CH3
(13)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)H —(CS)CH3
(14)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)H —(CS)CH3
(15)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(16)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(17)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(18)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(19)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(20)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(21)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(22)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(23)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(24)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(25)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(26)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(27)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(28)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(29)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(30)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(31)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(32)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(33)	[Image Omitted]	CH3	—CH2—CH2—	[Image Omitted]
(34)	[Image Omitted]	CH3	—CH2—CH2—	[Image Omitted]
(35)	[Image Omitted]	CH3	—CH2—CH2—	[Image Omitted]
(36)	[Image Omitted]	CH3	—CH2—CH2—	[Image Omitted]
(37)	[Image Omitted]	CH3	—CH2—CH2—	[Image Omitted]
(38)	[Image Omitted]	CH3	—CH2—CH2—	[Image Omitted]
(39)	[Image Omitted]	CH3	—CH2—CH2—	*—C≡N
(40)	[Image Omitted]	CH3	—CH2—CH2—	*—C≡N
(41)	[Image Omitted]	CH3	—CH2—CH2—	*—C≡N
(42)	[Image Omitted]	CH3	—CH2—CH2—	*—C≡N
(43)	[Image Omitted]	CH3	—CH2—CH2—	*—C≡N
(44)	[Image Omitted]	CH3	—CH2—CH2—	*—C≡N
(45)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)O—C2 H5
(46)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)O—CH3
(47)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)O—CH3
(48)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)O—CH3
(49)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)O—CH3
(50)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)O—CH3
(51)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)O—CH3
(52)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)O—CH3
(53)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)O—CH3
(54)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)O—CH3
(55)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)O—CH3
(56)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)O—CH3
(57)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)S—C2 H5
(58)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)S—CH3
(59)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)S—CH3
(60)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)S—CH3
(61)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)S—CH3
(62)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)S—CH3
(63)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(64)	[Image Omitted]	H CH3 C2 H5	—CH2—CH2—	—(CO)H —(CO)CH3 —(CO)C6 H5
(65)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)H —(CS)CH3
(66)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(67)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(68)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(69)	[Image Omitted]	CH3	—CH2—CH2—	[Image Omitted]
(70)	[Image Omitted]	CH3	—CH2—CH2—	—C≡N
(71)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)O—C2 H5
(72)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)O—CH3
(73)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)S—C2 H5
(74)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(75)	[Image Omitted]	H CH3 C2 H5	—CH2—CH2—	—(CO)H —(CO)CH3 —(CO)C6 H5
(76)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)H —(CS)CH3
(77)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(78)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)N(CH3)2
(79)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)N(CH3)2
(80)	[Image Omitted]	CH3	—CH2—CH2—	[Image Omitted]
(81)	[Image Omitted]	CH3	—CH2—CH2—	—C≡N
(82)	[Image Omitted]	CH3	—CH2—CH2—	—(CO)O—C2 H5
(83)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)O—CH3
(84)	[Image Omitted]	CH3	—CH2—CH2—	—(CS)S—C2 H5

A further embodiment of the present invention relates to processes for the preparation of the dyes of formula (1).

Generally, the process comprises condensating the methylenic compound Y₁ with the amino benzophenone compound of formula (1c) to the compound of formula (1d) and subsequently-reacting this compound to give the compound of formula (2) according to the following reaction scheme:

[Image Omitted]

wherein

Y₁ is selected from

[Image Omitted]

and Y₂ is simultaneously hydrogen; or

• Y₁ and Y₂ together with the linked carbon atom ¹C of formula (2) form a condensed carbocyclic ring of formula

[Image Omitted]

• Hal is a halogen atom; and
• R₁, X and Z are defined as in formula (1).

The reaction is generally initiated by contacting, for example by mixing together the starting compounds or by dropwise addition of one starting compound to the other.

Customary, the temperature is in the range of 250 to 400 K, preferably in the range of 270 to 300 K during the mixing of the starting compounds.

The reaction time is generally dependent on the reactivity of the starting compounds, on the selected reaction temperature and on the desired conversion. The reaction time is usually in the range from 3 hours to 3 days.

The selected reaction pressure is generally in the range from 50 kPa to 3 MPa, especially from 100 kPa to 1 MPa, and is more especially atmospheric pressure.

Preferably the reaction is carried out in the presence of a catalyst.

The molar ratio of compound of formula (1b) to the catalyst is generally selected in the range from 10:1 to 1:5, especially in the range from 10:1 to 1:1.

Preferred are basic catalysts as tertiary amines or acid catalysts, HA and Lewis acids like Ag⁺.

In addition, the reaction may be carried out with or without a solvent, but is preferably carried out in the presence of a solvent, preferably organic solvents or solvent mixtures.

Preferred solvents are alcohols like methanol, ethanol, propanol, 2-propanol or butanol; nitriles like acetonitril or propionitril; amides like dimethylformamide, dimethylacetamide or N-methylpyrolidone; halogenated hydrocarbons like chloroform, methylenechloride, trichloroethylene or chlorobenzene; or other solvents like dimethylsulfoxide or water or mixtures of the mentioned solvents.

The product prepared according to the process of the present invention may advantageously be worked up and isolated, and if desired be purified.

Customary, the work up starts by decreasing the temperature of the reaction mixture in the range from 350 to 273 K, especially in the range from 320 to 273 K.

It may be advantageous to decrease the temperature slowly over a period of several hours.

In general, the reaction product is filtered off and then subsequently dried.

Filtration is normally carried out in standard filtering equipment, for example Büchner funnels, filter presses, pressurised suction filters, preferably in vacuo.

The temperature for the drying is dependent on the pressure applied. Drying is usually carried out in vacuo at 50-200 mbar.

The drying is usually carried out at a temperature in the range from 313 to 363 K, especially from 323 to 353 K, and more especially in the range from 328 to 348 K.

Advantageously the product is purified by recrystallisation after isolation.

The dyes of formula (1) according to the invention are suitable for dyeing organic materials, such as keratin-containing fibers, wool, leather, silk, cellulose or polyamides, cotton or nylon, and preferably human hair. The dyeings obtained are distinguished by their depth of shade and their good fastness properties to washing, such as, for example, fastness to light, shampooing and rubbing. The stability, in particular the storage stability of the dyes according to the invention are excellent.

Generally, hair dyeing agents on a synthetic base may be classified into three groups:

• • temporary dyeing agents
  • semipermanent dyeing agents, and
  • permanent dyeing agents.

The multiplicity of shades of the dyes can be increased by combination with other dyes.

Therefore the dyes of formula (1) of the present invention may be combined with dyes of the same or other classes of dyes, especially with direct dyes, oxidation dyes; dye precursor combinations of a coupler compound as well as a diazotized compound, or a capped diazotized compound; and/or cationic reactive dyes.

Direct dyes are of natural origin or may be prepared synthetically. They are uncharged, cationic or anionic, such as acid dyes.

The dyes of formula (1) may be used in combination with at least one single direct dye different from the dyes of formula (1).

Direct dyes do not require any addition of an oxidizing agent to develop their dyeing effect. Accordingly the dyeing results are less permanent than those obtained with permanent dyeing compositions. Direct dyes are therefore preferably used for semipermanent hair dyeings.

Examples of direct dyes are described in “Dermatology”, edited by Ch. Culnan, H. Maibach, Verlag Marcel Dekker Inc., New York, Basle, 1986, Vol. 7, Ch. Zviak, The Science of Hair Care, chapter 7, p. 248-250, and in “Europäisches Inventar der Kosmetikrohstoffe”, 1996, published by The European Commission, obtainable in diskette form from the Bundesver-band der deutschen Industrie-und Handelsuntemehmen für Arzneimittel, Reformwaren und Körperpflegemittel e.V., Mannheim.

More preferred direct dyes which are useful for the combination with at least one single dye of formula (1), especially for semi permanent dyeing, are: 2-amino-3-nitrophenol, 2-amino-4-hydroxyethylamino-anisole sulfate, 2-amino-6-chloro-4-nitrophenol, 2-chloro-5-nitro-N-hydroxyethylene-p-phenylendiamine, 2-hydroxyethyl-picramic acid, 2,6-diamino-3-((pyridine-3yl)-azo)pyridine, 2-nitro-5-glyceryl-methylaniline, 3-methylamino-4-nitro-phenoxyethanol, 4-amino-2-nitrodiphenyleneamine-2′-carboxilic acid, 6-nitro-1,2,3,4,-tetrahydroquinoxaline, 4-N-ethyl-1,4-bis(2′-hydroxyethylamino-2-nitrobenzene hydrochloride, 1-methyl-3-nitro-4-(2′-hydroxyethyl)-aminobenzene, 3-nitro-p-hydroxyethyl-aminophenol, 4-amino-3-nitrophenol, 4-hydroxypropylamine-3-nitrophenol, hydroxyanthrylaminopropylmethyl morpohlino methosulfate, 4-nitrophenyl-aminoethylurea, 6-nitro-p-toluidine, Acid Blue 62, Acid Blue 9, Acid Red 35, Acid Red 87 (Eosin), Acid Violet 43, Acid Yellow 1, Basic Blue 3, Basic Blue 6, Basic Blue 7, Basic Blue 9, Basic Blue 12, Basic Blue 26, Basic Blue 99, Basic Brown 16, Basic Brown 17, Basic Red 2, Basic Red 22, Basic Red 76, Basic Violet 14, Basic Yellow 57, Basic Yellow 9, Disperse Blue 3, Disperse Orange 3, Disperse Red 17, Disperse Violet 1, Disperse Violet 4, Disperse Black 9, Fast Green FCF, HC Blue 2, HC Blue 7, HC Blue 8, HC Blue 12, HC Orange 1, HC Orange 2, HC Red 1, HC Red 10-11, HC Red 13, HC Red 16, HC Red 3, HC Red BN, HC Red 7, HC Violet 1, HC Violet 2, HC Yellow 2, HC Yellow 5, HC Yellow 5, HC Yellow 6, HC Yellow 7, HC Yellow 9, HC Yellow 12, HC Red 8, hydroxyethyl-2-nitro-p-toluidine, N,N-Bis-(2-Hydroxyethyl)-2-nitro-p-phenylendiamine, HC Violet BS, Picramic Acid, Solvent Green 7.

Furthermore, the dyes of formula (1) may be combined with at least one cationic azo dye, for example the compounds disclosed in GB-A-2 319 776 as well as the oxazine dyes described in DE-A-299 12 327 and mixtures thereof with the other direct dyes mentioned therein, and even more preferred with cationic dyes such as Basic Yellow 87, Basic Orange 31 or Basic Red 51, or with cationic dyes as described in WO 01/66646, especially example 4, or with cationic dyes as described in WO 02/31056, especially example 6 (compound of formula 106); or the cationic dye of formula (3) as described in EP-A-714,954, or with a yellow cationic dye of formula

[Image Omitted]

wherein

• R₁ and R₂ are each independently of the other a C₁-C₈alkyl; or an unsubstituted or substituted benzyl;
• R₃ is hydrogen; C₁-C₈alkyl; C₁-C₈alkoxy; cyanide; or halide; preferably hydrogen; and
• X⁻ is an anion; and preferably a compound of formula (DD1), wherein
• R₁ is methyl; R₂ is benzyl; R₃ is hydrogen; and X⁻ is an anion; or wherein
• R₁ is benzyl; R₂ is benzyl; R₃ is hydrogen; and X⁻ is an anion; or wherein
• R₁ is benzyl; R₂ is methyl; R₃ is hydrogen; and X⁻ is an anion.

Furthermore, cationic nitroaniline and anthraquinone dyes are useful for a combination with a dye of formula (1), for example the dyes as described in the following patent specifications: U.S. Pat. No. 5,298,029, especially in col 2, I. 33 to col 5, I. 38; U.S. Pat. No. 5,360,930, especially in col 2, I. 38 to col 5, I. 49; U.S. Pat. No. 5,169,403, especially in col 2, I. 30 to col 5, I. 38; U.S. Pat. No. 5,256,823, especially in col 4, I. 23 to col 5, I. 15; U.S. Pat. No. 5,135,543, especially in col 4, I. 24 to col 5, I. 16; EP-A-818 193, especially on p. 2, I. 40 to p. 3, I. 26; U.S. Pat. No. 5,486,629, especially in col 2, I. 34 to col 5, I. 29; and EP-A-758 547, especially on p. 7, I. 48 to p. 8, I. 19.

The dyes of formula (1) may also be combined with acid dyes, for example the dyes which are known from the international names (Color index), or trade names.

Preferred acid dyes which are useful for the combination with a dye of formula (1) are described in U.S. Pat. No. 6,248,314. They include Red Color No. 120, Yellow Color No. 4, Yellow Color No. 5, Red Color No. 201, Red Color No. 227, Orange Color No. 205, Brown Color No. 201, Red Color No. 502, Red Color No. 503, Red Color No. 504, Red Color No. 506, Orange Color No. 402, Yellow Color No. 402, Yellow Color No. 406, Yellow Color No. 407, Red Color No. 213, Red Color No. 214, Red Color No. 3, Red Color No. 104, Red Color No. 105(1), Red Color No. 106, Green Color No. 2, Green Color No. 3, Orange Color No. 207, Yellow Color No. 202(1), Yellow Color No. 202(2), Blue Color No. 202, Blue Color No. 203, Blue Color No. 205, Blue Color No. 2, Yellow Color No. 203, Blue Color No. 201, Green Color No. 201, Blue Color NO. 1, Red Color No. 230(1), Red Color No. 231, Red Color No. 232, Green Color No. 204, Green Color No. 205, Red Color No. 401, Yellow Color No. 403(1), Green Color No. 401, Green Color No. 402, Black Color No. 401 and Purple Color No. 401, especially Black Color No. 401, Purple Color 401, Orange Color No. 205.

These acid dyes may be used either as single component or in any combination thereof.

Hair dye compositions comprising an acid dye are known. They are for example described in “Dermatology”, edited by Ch. Culnan, H. Maibach, Verlag Marcel Dekker Inc., New York, Basle, 1986, Vol. 7, Ch. Zviak, The Science of Hair Care, chapter 7, p. 248-250, especially on p. 253 and 254.

Hair dye compositions which comprise an acid dye have a pH of 2-6, preferably 2-5, more preferably 2.5-4.0.

The dyes of formula (1) according to the present invention may also readily be used in combination with acid dyes and/or adjuvants, for example

• • acid dyes and an alkylene carbonate, as described in U.S. Pat. No. 6,248,314, especially in examples 1 and 2;
  • acid hair dye compositions comprising various kinds of organic solvents represented by benzyl alcohol as a penetrant solvent have good penetrability into hair, as described in Japanese Patent Application Laid-Open Nos. 210023/1986 and 101841/1995;
  • acid hair dye compositions with a water-soluble polymer or the like to prevent the drooping of the hair dye composition, as described for example in Japanese Patent Application Laid-Open Nos. 87450/1998, 255540/1997 and 245348/1996;
  • acid hair dye compositions with a water-soluble polymer of aromatic alcohols, lower alkylene carbonates, or the like as described in Japanese Patent Application Laid-Open No. 53970/1998 and Japanese Patent Invention No. 23911/1973.

The dyes of formula (1) may also be combined with uncharged dyes, for example selected from the group of the nitroanilines, nitrophenylenediamines, nitroaminophenols, anthraquinones, indophenols, phenazines, phenothiazines, bispyrazolons, or bispyrazol aza derivatives and methines.

Furthermore, the dyes of formula (1) may also be used in combination with oxidation dye systems.

Oxidation dyes, which, in the initial state, are not dyes but dye precursors are classified according to their chemical properties into developer and coupler compounds.

Suitable oxidation dyes are described for example in

• • DE 19 959 479, especially in col 2, I. 6 to col 3, I. 11;
  • “Dermatology”, edited by Ch. Culnan, H. Maibach, Verlag Marcel Dekker Inc., New York, Basle, 1986, Vol. 7, Ch. Zviak, The Science of Hair Care, chapter 8, on p. 264-267 (oxidation dyes);

Preferred developer compounds are for example primary aromatic amines, which are substituted in the para- or ortho-position with a substituted or unsubstituted hydroxy- or amino residue, or diaminopyridine derivatives, heterocyclic hydrazones, 4-aminopyrazol derivatives, 2,4,5,6-tetraminopyrimidine derivatives, or unsaturated aldehydes as described in DE 19 717 224, especially on p. 2, I. 50 to I. 66 and on p. 3 I. 8 to I. 12, or cationic developer compounds as described in WO 00/43367, especially on p., 2 I. 27 to p. 8, I. 24, in particular on p. 9, I. 22 to p. 11, I. 6.

Furthermore, developer compounds in their physiological compatible acid addition salt form, such as hydrochloride or sulfate can be used. Developer compounds, which have aromatic OH radicals are also suitable in their salt form together with a base, such as alkali metal-phenolates.

Preferred developer compounds are disclosed in DE 19959479, p. 2, I. 8-29.

More preferred developer compounds are p-phenylendiamine, p-toluoylendiamine, p-, m-o-aminophenol, N,N-bis-(2-hydroxyethyl)-p-phenylenediamine sulfate, 2-amino-4-hydroxy-ethylaminoanisole sulfate, hydroxyethyl-3,4-methylenedioxyaniline, 1-(2′-hydroxyethyl)-2,5-diaminobenzene, 2,6-dimethoxy-3,5-diamino-pyridine, hydroxypropyl-bis-(N-hydroxyethyl-p-phenylenediamine) hydrochloride, hydroxyethyl-p-phenylenediamine sulfate, 4-amino-3-me-thylphenol, 4-methylaminophenol sulfate, 2-aminomethyl-4-aminophenol, 4,5-diamino-1-(2-hydroxyethyl)-1H-pyrazol, 4-amino-m-cresol, 6-amino-m-cresol, 5-amino-6-chloro-cresol, 2,4,5,6-tetraminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine or 4-hydroxy-2,5,6-triaminopyrimidine sulfate.

Preferred coupler compounds are m-phenylendiamine derivatives, naphthole, resorcine and resorcine derivatives, pyrazolone and m-aminophenol derivatives, and most preferably the coupler compounds disclosed in DE 19959479, p. 1, I. 33 to p. 3, I. 11.

The dyes of formula (1) may also be used together with unsaturated aldehydes as disclosed in DE 19 717 224 (p. 2, I. 50 to I. 66 and on p. 3 I. 8 to I. 12) which may be used as direct dyes or, alternatively together with oxidation dye precursors.

Further preferred for a combination with a dye of formula (1) are the following oxidation dye precursors:

• • the developer/-coupler combination 2,4,5,6-tetraminopyrimidine and 2-methylresorcine for assessing of red shades;
  • p-toluenediamine and 4-amino-2-hydroxytoluene for assessing of blue-violet shades;
  • p-toluenediamine and 2-amino-4-hydroxyethylaminoanisole for assessing of blue shades;
  • p-toluenediamine and 2,4-diamino-phenoxyethynol for assessing of blue shades;
• methyl-4-aminophenol and 4-amino-2-hydroxytlooluene for assessing of orange shades;
  • p-toluenediamine and resorcine for assessing of brown-green shades;
  • p-toluenediamine and 1-naphthol for assessing of blue-violet shades, or
  • p-toluenediamine and 2-methylresorcine for assessing of brown-gold shades.

Furthermore, autooxidizable compounds may be used in combination with the dyes of formula (1).

Autooxidizable compounds are aromatic compounds with more than two substituents in the aromatic ring, which have a very low redox potential and will therefore be oxidized when exposed to the air. The dyeings obtained with these compounds are very stable and resistant to shampoo.

Autooxidizable compounds are for example benzene, indol, or indoline, especially 5,6-di-hydroxyindol or 5,6-dihydroxyindoline derivatives as described in WO 99/20234, especially on p. 26, I. 10 to p. 28, I. 15, or in WO 00/28957 on p. 2, third paragraph.

Preferred autooxidizable benzene derivatives are 1,2,4-trihydroxybenzene, 1-methyl-2,4,5-trihydroxybenzene, 2,4-diamnio-6-methylphenol, 2-amino-4-methylaminophenol, 2,5-diamino-4-methyl-phenol, 2,6-diamino-4-diethylaminophenol, 2,6-diamino-1,4-dihydroxy-benzene, and the salts of these compounds, which are accessible with acid.

Preferred autooxidizable indol derivatives are 5,6-dihydroxyindol, 2-methyl-5,6-dihydroxy-indol, 3-methyl-5,6-dihydroxyindole, 1-methyl-5,6-dihydroxyindol, 2,3-dimethyl-5,6-dihydroxy-indol, 5-methoxy-6-dihydroxyindol, 5-acetoxy-6-hydroixyindol, 5,6-diacetoxyindol, acid of 5,6-dihydroxyindol-2-carbon acid, and the salts of these compounds, which are accessible with acid.

The dyes of formula (1) may also be used in combination with naturally occurring dyes, such as henna red, henna neutral, henna black, camomile blossom, sandalwood, black tea, Rhamnus frangula bark, sage, campeche wood, madder root, catechu, sedre and alkanet root. Such dyeings are described, for example, in EP-A-404 868, especially on p. 3, I. 55 to p. 4, I. 9.

Furthermore, the dyes of formula (1) may also be used in combination with capped dia-zotised compounds.

Suitable diazotised compounds are for example the compounds of formulae (1)-(4) in WO 2004/019897 (bridging pages 1 and 2) and the corresponding watersoluble coupling components (I)-(IV) as disclosed in the same reference.

Further preferred dyes or dye combinations which are useful for the combination with a dye of formula (1) according to the present invention are described in

(DC-01): WO 95/01772, wherein mixtures of at least two cationic dyes are disclosed, especially p. 2, I. 7 to p. 4, I. 1, preferably p. 4, I. 35 to p. 8, I. 21; formulations p. 11, last §-p. 28, I. 19;
(DC-02): U.S. Pat. No. 6,843,256, wherein cationic dyes are disclosed, especially the compounds of formulae (1), (2), (3) and (4) (col. 1, I. 27-col. 3, I. 20, and preferably the compounds as prepared in the examples 1 to 4 (col. 10, I. 42 to col. 13, I. 37; formulations col. 13, I. 38 to col. 15, I. 8;
(DC-03): EP 970 685, wherein direct dyes are described, especially p. 2, I. 44 to p. 9, I. 56 and preferably p. 9, I. 58 to p. 48, I. 12; processes for dyeing of keratin-containing fibers especially p. 50, I. 15 to 43; formulations p. 50, I. 46 to p. 51, I. 40;
(DC-04): DE-A-19 713 698, wherein direct dyes are described, especially p. 2, I. 61 to p. 3, I. 43; formulations p. 5, I. 26 to 60;
(DC-05): U.S. Pat. No. 6,368,360, wherein directed dyes (col. 4, I. 1 to col. 6, I. 31) and oxidizing agents (col. 6, I. 37-39) are disclosed; formulations col. 7, I. 47 to col. 9, I. 4;
(DC-06): EP 1 166 752, wherein cationic dyes (p. 3, I. 22-p. 4, I. 15) and anionic UV-absorbers (p. 4, I. 27-30) are disclosed; formulations p. 7, I. 50-p. 9, I. 56;
(DC-07): EP 998,908, wherein oxidation dyeings comprising a cationic direct dye and pyrazolo-[1,5-a]-pyrimidines (p. 2, I. 48-p. 4, I. 1) are disclosed; dyeing formulations p. 47, I. 25 to p. 50, I. 29;
(DC-08): FR-2788432, wherein combinations of cationic dyes with Arianors are disclosed, especially p. 53, I. 1 to p. 63, I. 23, more especially p. 51 to 52, most especially Basic Brown 17, Basic brown 16, Basic Red 76 and Basic Red 118, and/or at least one Basic Yellow 57, and/or at least one Basic Blue 99; or combinations of arianors and/or oxidative dyes, especially p. 2, I. 16 to p. 3, I. 16; dyeing formulations on p. 53, I. 1 to p. 63, I. 23;
(DC-09): DE-A-19 713 698, wherein the combinations of direct dyes and permanent-wave fixing comprising an oxidation agent, an oxidation dye and a direct dye are disclosed; especially p. 4, I. 65 to p. 5, I. 59;
(DC-10): EP 850 638, wherein developer compounds and oxidizing agents are disclosed; especially p. 2, I. 27 to p. 7, I. 46 and preferably p. 7, I. 20 to p. 9, I. 26; dyeing formulations p. 2, I. 3-12 and I. 30 to p. 14, and p. 28, I. 35-p. 30, I. 20; preferably p. 30, I. 25-p. 32, I. 30;
(DC-11): U.S. Pat. No. 6,190,421 wherein extemporaneous mixtures of a composition (A) containing one or more oxidation dye precursors and optionally one or more couplers, of a composition (B), in powder form, containing one or more direct dyes (col. 5, I. 40-col. 7, I. 14), optionally dispersed in an organic pulverulent excipient and/or a mineral pulverulent excipient, and a composition (C) containing one or more oxidizing agents are disclosed; formulations col. 8, I. 60-col. 9, I. 56;
(DC-12): U.S. Pat. No. 6,228,129, wherein a ready-to-use composition comprising at least one oxidation base, at least one cationic direct dye and at least one enzyme of the 2-electron oxidoreductase type in the presence of at least one donor for the said enzyme are disclosed; especially col. 8, I. 17-col. 13, I. 65; dyeing formulations in col. 2, I. 16 to col. 25, I. 55, a multi-compartment dyeing device is described in col. 26, I. 13-24;
(DC-13): WO 99/20235, wherein compositions of at least one cationic dye and at least one nitrated benzene dye with cationic direct dyes and nitro benzene direct dyes are described; on p. 2, I. 1 to p. 7, I. 9, and p. 39, I. 1 to p. 40 I. 11, preferably p. 8, I. 12 to p. 25 I. 6, p. 26, I. 7 to p. 30, I. 15; p. 1, I. 25 to p. 8, I. 5, p. 30, I. 17 to p. 34 I. 25, p. 8, I. 12 to p. 25 I. 6, p. 35, I. 21 to 27, especially on p. 36, I. 1 to p. 37;
(DC-14): WO 99/20234, wherein compositions comprising at least one direct cationic dye and at least one autooxidisable dye, especially benzene, indol and indoline derivatives are described, preferably direct dyes on p. 2, I. 19 to p. 26, I. 4, and autooxidisable dyes as dislosed especially on p. 26, I. 10 to p. 28, I. 15; dyeing formulations especially on p. 34, I. 5 to p. 35, Ii 18;
(DC-15): EP 850 636, wherein oxidation dyeing compositions comprising at least one direct dye and at least one meta-aminophenol derivative as coupler component and at least one developer compound and an oxidizing agent are disclosed, especially p. 5, I. 41 to p. 7, I. 52, dyeing formulations p. 19, I. 50-p. 22, I. 12;
(DC-16): EP-A-850 637, wherein oxidation dyeing compositions comprising at least one oxidation base selected from para-phenylenediamines and bis(phenyl)alkylenediamines, and the acid-addition salts thereof, at least one coupler selected from meta-diphenols, and the acid-addition salts thereof, at least one cationic direct dye, and at least one oxidizing agent are disclosed, especially p. 6, I. 50 to p. 8, I. 44 are disclosed; dyeing formulations p. 21, I. 30-p. 22, I. 57;
(DC-17): WO 99/48856, wherein oxidation dyeing compositions comprising cationic couplers are disclosed, especially p. 9, I. 16-p. 13, I. 8, and p. 11, I. 20-p. 12, I. 13; dyeing formulations p. 36, I. 7-p. 39, I. 24;
(DC-18): DE 197 172 24, wherein dyeing agents comprising unsaturated aldehydes and coupler compounds and primary and secondary amino group compounds, nitrogen-containing heterocyclic compounds, amino acids, oligopeptids, aromatic hydroxy compounds, and/or at least one CH-active compound are disclosed p. 3, I. 42-p. 5 I. 25; dyeing formulations p. 8, I. 25-p. 9, I. 61.

In the dye combinations disclosed in the references (DC-01-DC-18) above, the dyes of formula (1) according to the present invention may be added to the dye combinations or dyeing formulations or may be replaced with at least one dye of formula (1).

The present invention also relates to formulations, which are used for the dyeing of organic materials, preferably keratin-containing fibers, and most preferably human hair, comprising at least one dye of formula (1).

Preferably the dyes of formula (1) are incorporated into the composition for treating organic material, preferably for dyeing in amounts of 0.001-5% b.w. (hereinafter indicated merely by “%”), particularly 0.005-4%, more particularly 0.2-3%, based on the total weight of the composition.

The formulations may be applied on the keratin-containing fiber, preferably the human hair in different technical forms.

Technical forms of formulations are for example a solution, especially a thickened aqueous or aqueous alcoholic solution, a cream, foam, shampoo, powder, gel, or emulsion.

Customary the dyeing compositions are applied to the keratin-containing fiber in an amount of 50 to 100 g at a temperature from 15 to 50° C., preferably from 20 to 40° C.

Preferred forms of formulations are ready-to-use compositions or multi-compartment dyeing devices or ‘kits’ or any of the multi-compartment packaging systems with compartments as described for example in U.S. Pat. No. 6,190,421, col 2, I. 16 to 31.

The pH value of the ready-to-use dyeing compositions is usually from 2 to 11, preferably from 5 to 10.

Preferably the dyeing compositions, which are not stable to reduction, are prepared with oxidizing agent free compositions just before the dyeing process.

One preferred embodiment of the present invention relates to the formulation of dyes, wherein the dyes of formula (1) are in powder form.

Powder formulations are preferably used if stability and/or solubility problems as for example described in DE 197 13 698, p. 2, I. 26 to 54 and p. 3, I. 51 to p. 4, I. 25, and p. 4, I. 41 top. 5 I. 59.

Suitable cosmetic hair-care formulations are hair-treatment preparations, e.g. hair-washing preparations in the form of shampoos and conditioners, hair-care preparations, e.g. pre-treatment preparations or leave-on products such as sprays, creams, gels, lotions, mousses and oils, hair tonics, styling creams, styling gels, pomades, hair rinses, treatment packs, intensive hair treatments, hair-structuring preparations, e.g. hair-waving preparations for permanent waves (hot wave, mild wave, cold wave), hair-straightening preparations, liquid hair-setting preparations, hair foams, hairsprays, bleaching preparations, e.g. hydrogen peroxide solutions, lightening shampoos, bleaching creams, bleaching powders, bleaching pastes or oils, temporary, semi-permanent or permanent hair colorants, preparations containing self-oxidizing dyes, or natural hair colorants, such as henna or camomile.

For use on human hair, the dyeing compositions of the present invention can usually be incorporated into an aqueous cosmetic carrier. Suitable aqueous cosmetic carriers include, for example W/O, O/W, O/W/O, W/O/W or PIT emulsions and all kinds of microemulsions, creams, sprays, emulsions, gels, powders and also surfactant-containing foaming solutions, e.g. shampoos or other preparations, that are suitable for use on keratin-containing fibers. Such forms of use are described in detail in Research Disclosure 42448 (August 1999). If necessary, it is also possible to incorporate the dyeing compositions into anhydrous carriers, as described, for example, in U.S. Pat. No. 3,369,970, especially col 1, I. 70 to col 3, I. 55. The dyeing compositions according to the invention are also excellently suitable for the dyeing method described in DE-A-3 829 870 using a dyeing comb or a dyeing brush.

The constituents of the aqueous carrier are present in the dyeing compositions of the present invention in the customary amounts, for example emulsifiers may be present in the dyeing compositions in concentrations from 0.5 to 30% b.w. and thickeners in concentrations from 0.1 to 25% b.w. of the total dyeing composition.

Further carriers for dyeing compositions are for example described in “Dermatology”, edited by Ch. Culnan, H. Maibach, Verlag Marcel Dekker Inc., New York, Basle, 1986, Vol. 7, Ch. Zviak, The Science of Hair Care, chapter 7, p. 248-250, especially on p. 243, I. 1 to p. 244, I. 12.

A shampoo has, for example, the following composition:

0.01 to 5% b.w. of a dye of formula (1);
8% b.w of disodium PEG-5 laurylcitrate Sulfosuccinate, Sodium Laureth Sulfate;
20% b.w. of sodium cocoamphoacetate;
0.5% b.w. of methoxy PEG/PPG-7/3 aminopropyl dimethicone;
0.3% b.w. of hydroxypropyl guar hydroxypropytrimonium chloride;
2.5% b.w. of PEG-200 hydrogenated glyceryl palmate; PEG-7 glyceryl cocoate;
0.5% b.w. of PEG-150 distearate;
2.2. % b.w of citric acid;
perfume, preservatives; and
water ad 100%.

The dyes of formula (1) may be stored in a liquid to paste-like preparation (aqueous or non-aqueous) or in the form of a dry powder.

When the dyes and adjuvants are stored together in a liquid preparation, the preparation should be substantially anhydrous in order to reduce reaction of the compounds.

The dyeing compositions according to the invention may comprise any active ingredients, additives or adjuvants known for such preparations, like surfactants, solvents, bases, acids, perfumes, polymeric adjuvants, thickeners and light stabilisers.

The following adjuvants are preferably used in the hair dyeing compositions of the present invention:

• • non-ionic polymers, for example vinylpyrrolidone/vinyl acrylate copolymers, polyvinylpyrrolidone and vinylpyrrolidone/vinyl acetate copolymers and polysiloxanes;
  • cationic polymers, such as quaternised cellulose ethers, polysiloxanes having quaternary groups, dimethyldiallylammonium chloride polymers, copolymers of dimethyldiallylammonium chloride and acrylic acid, as available commercially under the name Merquat® 280 and the use thereof in hair dyeing as described, for example, in DE-A-4 421 031, especially p. 2, I. 20 to 49, or EP-A-953 334;
  • acrylamide/dimethyldiallylammonium chloride copolymers, diethyl-sulfate-quaternised dimethylaminoethyl methacrylate/vinylpyrrolidone copolymers, vinylpyrrolidone/-imidazolinium methochloride copolymers;
  • quaternised polyvinyl alcohol:
  • zwitterionic and amphoteric polymers, such as acrylamido-propyltrimethylammonium chloride/acrylate copolymers and octylacrylamide/methyl methacrylate/tert-butylaminoethyl methacrylate/2-hydroxypropyl methacrylate copolymers;
  • anionic polymers, such as, for example, polyacrylic acids, crosslinked polyacrylic acids, vinyl acetate/crotonic acid copolymers, vinylpyrrolidone/vinyl acrylate copolymers, vinyl acetate/butyl maleate/isobornyl acrylate copolymers, methyl vinyl ether/maleic anhydride copolymers and acrylic acid/ethyl acrylate/N-tert-butyl acrylamide terpolymers;
  • thickeners, such as agar, guar gum, alginates, xanthan gum, gum arabic, karaya gum, locust bean flour, linseed gums, dextrans, cellulose derivatives, e.g. methyl cellulose, hydroxyalkyl cellulose and carboxymethyl cellulose, starch fractions and derivatives, such amylose, amylopectin and dextrins, clays, e.g. bentonite or fully synthetic hydrocolloids such as, for example, polyvinyl alcohol;
  • structuring agents, such as glucose and maleic acid;
  • hair-conditioning compounds, such as phospholipids, for example soya lecithin, egg lecithin, cephalins, silicone oils, and conditioning compounds, such as those described in DE-A-19 729 080, especially p. 2, I. 20 to 49, EP-A-834 303, especially p. 2, I. 18-p. 3, I. 2, or EP-A-312 343, especially p. 2, I. 59-p. 3, I. 11;
  • protein hydrolysates, especially elastin, collagen, keratin, milk protein, soya protein and wheat protein hydrolysates, condensation products thereof with fatty acids and also quaternised protein hydrolysates;
  • perfume oils, dimethyl isosorbitol and cyclodextrins,
  • solubilisers, such as ethanol, isopropanol, ethylene glycol, propylene glycol, glycerol and diethylene glycol,
  • anti-dandruff active ingredients, such as piroctones, olamines and zinc Omadine,
  • substances for adjusting the pH value;
  • panthenol, pantothenic acid, allantoin, pyrrolidonecarboxylic acids and salts thereof, plant extracts and vitamins;
  • cholesterol;
  • light stabilisers and UV absorbers as listed in Table below:

TABLE 2
UV absorbers which may be use in the dyeing compositions of the present invention

No.	Chemical Name	CAS No.

1	(+/−)-1,7,7-trimethyl-3-[(4-methylphenyl)methylene]bicyclo-	36861-47-9
	[2.2.1]heptan-2-one
2	1,7,7-trimethyl-3-(phenylmethylene)bicyclo[2.2.1]heptan-2-one	15087-24-8
3	(2-Hydroxy-4-methoxyphenyl)(4-methylphenyl)methanone	1641-17-4
4	2,4-dihydroxybenzophenone	131-56-6
5	2,2′,4,4′-tetrahydroxybenzophenone	131-55-5
6	2-Hydroxy-4-methoxy benzophenone;	131-57-7
7	2,2′-dihydroxy-4,4′-dimethoxybenzophenone	131-54-4
8	2,2′-Dihydroxy-4-methoxybenzophenone	131-53-3
9	1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)propane-1,3-dione	70356-09-1
10	3,3,5-Trimethyl cyclohexyl-2-hydroxy benzoate	118-56-9
11	Isopentyl p-methoxycinnamate	71617-10-2
12	Menthyl-o-aminobenzoate	134-09-8
13	Menthyl salicylate	89-46-3
14	2-Ethylhexyl 2-cyano,3,3-diphenylacrylate	6197-30-4
15	2-ethylhexyl 4-(dimethylamino)benzoate	21245-02-3
16	2-ethylhexyl 4-methoxycinnamate	5466-77-3
17	2-ethylhexyl salicylate	118-60-5
18	Benzole acid, 4,4′,4″-(1,3,5-triazine-2,4,6-triyltriimino)tris-tris(2-	88122-99-0
	ethylhexyl)ester; 2,4,6-Trianilino-(p-carbo-2′-ethylhexyl-1′-oxi)-
	1,3,5-triazine
19	Benzoic acid, 4-amino-, ethyl ester, polymer with oxirane	113010-52-9
20	2-Propenamide, N-[[4-[(4,7,7-trimethyl-3-oxobicyclo[2.2.1]hept-2-	147897-12-9
	ylidene)methyl]phenyl]methyl]-, homopolymer
21	Triethanolamine salicylate	2174-16-5
22	2,2′-Methylene-bis-[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethyl-	103597-45-1
	butyl)-phenol]
23	2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxy-	187393-00-6
	phenyl)-(1,3,5)-triazine (Tinosorb S)
24	Benzoic acid, 4,4′-[[6-[[4-[[(1,1-dimethylethyl)amino]carbonyl]-	154702-15-5
	phenyl]amino]1,3,5-triazine-2,4-diyl]diimino]bis-, bis(2-ethylhexyl)-ester
25	Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6-[2-methyl-3-[1,3,3,3-	155633-54-8
	tetramethyl-1-[(trimethylsilyl)oxy]disiloxanyl]propyl]-
26	Dimethicodiethylbezalmalonate	207574-74-1
27	Benzoic acid, 2-[4-(diethylamino)-2-hydroxybenzoyl]-, hexyl ester	302776-68-7
28	1,3,5-Triazine, 2,4,6-tris(4-methoxyphenyl)-	7753-12-0
29	1,3,5-Triazine, 2,4,6-tris[4-[(2-ethylhexyl)oxy]phenyl]-	208114-14-1
30	2-Propenoic acid, 3-(1H-imidazol-4-yl)-	104-98-3
31	Benzoic acid, 2-hydroxy-, [4-(1-methylethyl)phenyl]methyl ester	94134-93-7
32	1,2,3-Propanetriol, 1-(4-aminobenzoate)	136-44-7
33	Benzeneacetic acid, 3,4-dimethoxy-a-oxo-	4732-70-1
34	2-Propenoic acid, 2-cyano-3,3-diphenyl-, ethyl ester	5232-99-5
35	Anthralinic acid, p-menth-3-yl ester	134-09-8
36	1,3,5-Triazine-2,4,6-triamine, N,N′-bis[4-[5-(1,1-dimethylpropyl)-2-	288254-16-0
	benzoxazolyl]phenyl]-N″-(2-ethylhexyl)- or Uvasorb K2A
37	2-Hydroxy-4-methoxy benzophenone-5-sulfonic acid	4065-45-6
38	Alpha-(2-oxoborn-3-ylidene)toluene-4-sulphonic acid and its salts	56039-58-8
39	Methyl N,N,N-trimethyl-4-[(4,7,7-trimethyl-3-oxobicyclo[2,2,1]hept-	52793-97-2
	2-ylidene)methyl]anilinium sulphate;
40	4-aminobenzoic acid	150-13-0
41	2-phenyl-1H-benzimidazole-5-sulphonic acid	27503-81-7
42	3,3′-(1,4-phenylenedimethylene)bis[7,7-dimethyl-2-oxo-bicyclo-	90457-82-2
	[2.2.1]heptane-1-methanesulfonic acid]
43	1H-Benzimidazole-4,6-disulfonic acid, 2,2′-(1,4-phenylene)bis-,	180898-37-7
	disodium salt
44	Benzenesulfonic acid, 3-(2H-benzotriazol-2-yl)-4-hydroxy-5-(1-	92484-48-5
	methylpropyl)-, monosodium salt
45	1-Dodecanaminium, N-[3-[[4-(dimethylamino)benzoyl]amino]pro-	156679-41-3
	pyl]N,N-dimethyl-, salt with 4-methylbenzenesulfonic acid (1:1)
46	1-Propanaminium, N,N,N-trimethyl-3-[(1-oxo-3-phenyl-2-propenyl)-	177190-98-6
	amino]-, chloride
47	1H-Benzimidazole-4,6-disulfonic acid, 2,2′-(1,4-phenylene)bis-	170864-82-1
48	1-Propanaminium, 3-[[3-[3-(2H-benzotriazol-2-yl)-5-(1,1-dimethyl-	340964-15-0
	ethyl)-4-hydroxyphenyl]-1-oxopropyl]amino]-N,N-diethyl-N-methyl-,
	methyl sulfate (salt)
49	2,2′-bis(1,4-phenylene)-1H-benzimidazole-4,6-disulphonic acid mono	349580-12-7,
	sodium salt or Disodium phenyl dibenzimidazole tetrasulfonate
	or Neoheliopan AP

The use of UV absorbers can effectively protect natural and dyed hair from the damaging rays of the sun and increase the wash fastness of dyed hair.

Furthermore, the following UV absorbers or combinations may be used in the dyeing compositions according to the invention:

• • cationic benzotriazole UV absorbers as for example described in WO 01/36396 especially on p. 1, I. 20 to p. 2, I. 24, and preferred on p. 3 to 5, and on p. 26 to 37;
  • cationic benzotriazole UV in combination with antioxidants as described in WO 01/36396, especially on p. 11, I. 14 to p. 18;
  • UV absorbers in combination with antioxidants as described in U.S. Pat. No. 5,922,310, especially in col 2, I. 1 to 3;
  • UV absorbers in combination with antioxidants as described in U.S. Pat. No. 4,786,493, especially in col 1, 42 to col 2, I. 7, and preferred in col 3, 43 to col 5, I. 20;
  • combination of UV absorbers as described in U.S. Pat. No. 5,830,441, especially in col 4, I. 53 to 56;
  • combination of UV absorbers as described in WO 01/36396, especially on p. 11, I. 9 to 13; or
  • triazine derivatives as described in WO 98/22447, especially on p. 1, I. 23 to p. 2, I. 4, and preferred on p. 2, I. 11 to p. 3, I. 15 and most preferred on p. 6 to 7, and 12 to 16.

Suitable cosmetic preparations may usually contain 0.05 to 40% b.w., preferably from 0.1 to 20% b.w., based on the total weight of the composition, of one or more UV absorbers;

• • consistency regulators, such as sugar esters, polyol esters or polyol alkyl ethers;
  • fats and waxes, such as spermaceti, beeswax, montan wax, paraffins, fatty alcohols and fatty acid esters;
  • fatty alkanolamides;
  • polyethylene glycols and polypropylene glycols having a molecular weight from 150 to 50 000, for example such as those described in EP-A-801 942, especially p. 3, I. 44 to 55,
  • complexing agents, such as EDTA, NTA and phosphonic acids,
  • swelling and penetration substances, such as polyols and polyol ethers, as listed extensively, for example, in EP-A-962 219, especially p. 27, I. 18 to 38, for example glycerol, propylene glycol, propylene glycol monoethyl ether, butyl glycol, benzyl alcohol, carbonates, hydrogen carbonates, guanidines, ureas and also primary, secondary and tertiary phosphates, imidazoles, tannins, pyrrole;
  • opacifiers, such as latex;
  • pearlising agents, such as ethylene glycol mono- and di-stearate;
  • propellants, such as propane-butane mixtures, N₂O, dimethyl ether, CO₂ and air;
  • antioxidants; preferably the phenolic antioxidants and hindered nitroxyl compounds disclosed in ip.com (IPCOM #000033153D);
  • sugar-containing polymers, as described in EP-A-970 687;
  • quaternary ammonium salts, as described in WO 00/10517;
  • Bacteria inhibiting agents, like preservatives that have a specific action against gram-positive bacteria, such as 2,4,4′-trichloro-2′-hydroxydiphenyl ether, chlorhexidine (1,6-di(4-chlorophenyl-biguanido)hexane) or TCC (3,4,4′-trichlorocarbanilide). A large number of aromatic substances and ethereal oils also have antimicrobial properties. Typical examples are the active ingredients eugenol, menthol and thymol in clove oil, mint oil and thyme oil. A natural deodorising agent of interest is the terpene alcohol farnesol (3,7,11-trimethyl-2,6,10-dodecatrien-1-ol), which is present in lime blossom oil. Glycerol monolaurate has also proved to be a bacteriostatic agent. The amount of the additional bacteria-inhibiting agents present is usually from 0.1 to 2% b.w., based on the solids content of the preparations;

The dyeing compositions according to the present invention generally comprise at least one surfactant.

Suitable surfactants are zwitterionic or ampholytic, or more preferably anionic, non-ionic and/or cationic surfactants.

Suitable anionic surfactants in the dyeing compositions according to the present invention include all anionic surface-active substances that are suitable for use on the human body. Such substances are characterised by an anionic group that imparts water solubility, for example a carboxylate, sulfate, sulfonate or phosphate group, and a lipophilic alkyl group having approximately 10 to 22 carbon atoms. In addition, glycol or polyglycol ether groups, ester, ether and amide groups and also hydroxy groups may be present in the molecule. The following are examples of suitable anionic surfactants, each in the form of sodium, potassium or ammonium salts or mono-, di- or tri-alkanolammonium salts having 2 or 3 carbon atoms in the alkanol group:

• • linear fatty acids having 10 to 22 carbon atoms (soaps),
  • ether carboxylic acids of formula R—O—(CH₂—CH₂—O)_x—CH₂—COOH, in which R is a linear alkyl group having 10 to 22 carbon atoms and x=0 or from 1 to 16,
  • acyl sarcosides having 10 to 18 carbon atoms in the acyl group,
  • acyl taurides having 10 to 18 carbon atoms in the acyl group,
  • acyl isothionates having 10 to 18 carbon atoms in the acyl group,
  • sulfosuccinic mono- and di-alkyl esters having 8 to 18 carbon atoms in the alkyl group and sulfosuccinic monoalkylpolyoxyethyl esters having 8 to 18 carbon atoms in the alkyl group and from 1 to 6 oxyethyl groups,
  • linear alkane sulfonates having 12 to 18 carbon atoms,
  • linear α-olefin sulfonates having 12 to 18 carbon atoms,
  • α-sulfo fatty acid methyl esters of fatty acids having 12 to 18 carbon atoms,
  • alkyl sulfates and alkyl polyglycol ether sulfates of formula R′—O(CH₂—CH₂—O)_x—SO₃H, in which R′ is a preferably linearar alkyl group having 10 to 18 carbon atoms and x′=0 or from 1 to 12,
  • mixtures of surface-active hydroxysulfonates according to DE-A-3 725 030;

1. Compounds of formula (1)

[Image Omitted]

wherein L₁ is hydrogen; C₁-C₁₂alkyl; or phenyl-C₁-C₄alkyl; X is C₁-C₁₂alkylene, C₂-C₁₂alkenylene, C₅-C₁₀cycloalkylene, C₅-C₁₀arylene, or C₅-C₁₀arylene-C₁-C₁₀alkylene, which may by interrupted by —O—, —NH—, —S—, —CO—, or —SO₂—; Y is the residue of an organic dye. Z is a group of formula

[Image Omitted]

or —C≡N; wherein A is O; S; or N-L₂; B is L₃; —OL₃; —NL₃L₄; or —SL₃; and L₂, L₃ and L₄, independently from each other are hydrogen; C₁-C₁₂alkyl; C₆-C₁₂aryl; or C₆-C₁₂aryl-C₁-C₁₂alkyl.

2. Compounds according to claim 1, wherein in formula (1) X is C₁-C₁₂alkylene.

3. Compounds according to claim 2, wherein X is ethylene.

4. Compounds according to claim 1, wherein Y is a radical of formula

[Image Omitted] [Image Omitted]

wherein R₁, R₂ and R₃ independently from each other hydrogen; halogen; C₁-C₁₆alkyl, which is saturated or unsaturated, linear or branched, substituted or unsubstituted, or interrupted or uninterrupted with heteroatoms; phenyl, which is substituted or unsubstituted; a carboxylic acid radical; sulfonic acid radical; hydroxy; nitrile; C₁-C₁₆alkoxy, (poly)-hydroxy-C₂-C₄-alkoxy; halogen; sulfonylamino; SR₃₃; NR₃₃R₃₄; OR₃₃; SO₂; COOR₃₃; NR₃₃COR₃₄; or CONR₃₃; Q₁ is a bivalent radical selected from —N═N—; —CR_d═N—; —N═CR_d—; —NR_d—N═CR_e—; and —R_dC═N—NR_e—; T₁ is a bivalent radical of an aromatic or heteroaromatic substituted or unsubstituted compound; R_d and R_e independently from each other are hydrogen; unsubstituted or substituted C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₅-C₁₀aryl; C₁ C₁₀alkyl-C₅-C₁₀aryl; or C₅-C₁₀aryl-C₁-C₁₀alkyl; R₃₃ and R₃₄ independently from each other are hydrogen; C₁-C₁₂alkyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅-alkoxy, hydroxy or —(CO)—H; —(CO)—C₁-C₅alkyl; phenyl or phenyl-C₁-C₄alkyl, wherein the phenyl moiety may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂, carboxy or hydroxy; R₄, R₅ and R₆ independently from each other are hydrogen; C₁-C₂₀alkyl or C₁-C₂₀alkoxy, which may be substituted by one or more C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂ or hydroxy; C₃-C₆cycloalkyl; —C(O)H; —C(O)—C₁-C₅alkyl; halogen; NO₂; OH; phenyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂ or hydroxy; or a radical of formula —NR₃₅R₃₆; R₃₅ and R₃₆ independently from each other are hydrogen; C₁-C₁₂alkyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅-alkoxy, hydroxy or —(CO)—H; —(CO)—C₁-C₅alkyl; phenyl or phenyl-C₁-C₄alkyl, wherein the phenyl moiety may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂, carboxy or hydroxy; R₇, R₈, R₉ and R₁₀ independently from each other are hydrogen; C₁-C₂₀alkyl; C₁-C₂₀alkoxy; C₃-C₆cycloalkyl; halogen; NO₂; OH; SH; or a radical of formula

[Image Omitted] X₁ is C₁-C₁₈alkylene; —(CO)—C₁-C₁₈alkylene C₁-C₁₈arylene; C₆-C₁₈arylene-C₁-C₁₂alkylene; or —(OCH₂CH₂)_n2—O—; T₂ is a radical of formula

[Image Omitted]

or —O—(X₃)_s; Q₂ is a cationic biradical of a saturated, aromatic or heteroaromatic group; or a radical of formula

[Image Omitted] R_f, R_g and R_h independently from each other are hydrogen; C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₆-C₁₀aryl; C₆-C₁₀aryl-C₁-C₁₀alkyl; or C₁-C₁₀alkyl(C₅-C₁₀aryl); X₂, X₃ and X₄ independently from each other are C₁-C₁₈alkylene; —(CO)—C₁-C₁₈alkylene-C₁-C₁₈arylene; C₆-C₁₈arylene-C₁-C₁₂alkylene; or —(OCH₂CH₂)_n1—O—; p is 0; or 1 R₃₇ is hydrogen; or C₁-C₂₀alkyl; R₃₈, R₃₉ and R₄₀ independently from each other are hydrogen, C₁-C₂₀alkyl, C₄-C₁₂cycloalkyl, C₆-C₁₃aralkyl; phenyl-C₁-C₅alkyl; or R₃₈ and R₃₉ together with the linking nitrogen atom form a C₄-C₁₂-membered heterocyclic ring which may be interrupted by one or more than one —O— or —NH-groups; u is 0 or 1; n₁ and n₂ independently from each other are a number from 1 to 5; s is 0; or 1; t is 0; or 1; R₁₁, R₁₂ and R₁₃ independently from each other are hydrogen; C₁-C₂₀alkyl or C₁-C₂₀alkoxy, which may be substituted by one or more C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂ or hydroxy; C₃-C₆cycloalkyl; —C(O)H; —C(O)—C₁-C₅alkyl; —C(O)OH; —C(O)O—C₁-C₅alkyl; halogen; NO₂; OH; SH; phenyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂ or hydroxy; or a radical —NR₄₁R₄₂; Q₃ is —C(O)—; —C(O)O—; —OCO—; —N(R_i)—X₅—; —CON(R_i)—; —(R_i)NC(O)—; —O—; —S—; —S(O)—; or —S(O)₂—; T₃ is the direct bond;

[Image Omitted]

or a cationic biradical of a saturated, aromatic or heteroaromatic group; R_i, R_k, R_l independently from each other are C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₆-C₁₀aryl; C₆-C₁₀aryl-C₁-C₁₀alkyl; or C₁-C₁₀alkyl(C₅-C₁₀aryl); R₄₁ and R₄₂ independently from each other are hydrogen; C₁-C₁₂alkyl, which may be substituted by one or more C₁-C₅alkyl, C₁-C₅-alkoxy, hydroxy or —(CO)—H; —(CO)—C₁-C₅alkyl; phenyl or phenyl-C₁-C₄alkyl, wherein the phenyl moiety may be substituted by one or more C₁-C₅alkyl, C₁-C₅alkoxy, halogen, —NH₂, mono-C₁-C₅alkylamino, di-C₁-C₅alkylamino, —NO₂, carboxy or hydroxy; or a radical of formula

[Image Omitted]

wherein at least one of the radicals R₁₁, R₁₂ or R₁₃ is NO₂; R₄₃, R₄₄ and R₄₅ independently from each other are hydrogen; C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₆-C₁₀aryl; C₆-C₁₀aryl-C₁-C₁₀alkyl; or C₁-C₁₀alkyl(C₅-C₁₀aryl); X₅ is the direct bond; C₁-C₁₀alkylene; C₅-C₁₀cycloalkylene; C₅-C₁₀arylene; or C₅-C₁₀arylene-(C₁-C₁₀alkylene); R₁₄ is N⁺R₄₆R₄₇; R₄₆ and R₄₇ independently from each other are hydrogen; C₁-C₁₂alkyl; or phenyl-C₁-C₄alkyl; or R₄₆ and/or R₄₇ are a bivalent C₃-C₆alkylene radical which is linked to the carbon atoms C¹ or C² in formula (1e) respectively and, together with the linking nitrogen atom form a 6 to 16-membered carbocyclic ring; R₁₅ is NR₄₈R₄₉; or OR₄₈; R₄₈ and R₄₉, independently from each other are hydrogen; C₁-C₁₂alkyl; or phenyl-C₁-C₄alkyl; or R₄₈ and R₄₉ are a bivalent C₃-C₆alkylene radical which is linked to the carbon atoms C³ or C⁴ in formula (1e) respectively and, together with the linking nitrogen or oxygen atom form a 6 to 16-membered carbocyclic ring; or R₄₈ and R₄₉ together with the linking nitrogen atom form a 4 to 8 membered carbocyclic ring; R₁₆, R₁₇, R₁₈, R₁₉ and R₂₀ independently form each other are hydrogen; C₁-C₁₂alkyl; halogen; NR₅₀R₅₁; or a radical of formula

[Image Omitted] R₅₀ and R₅₁ independently from each other are hydrogen; C₁-C₁₂alkyl; phenyl-C₁-C₄alkyl; or a radical of formula

[Image Omitted] V₁ is —O—; or —NR₅₃; R₅₂ and R₅₃ independently from each other are hydrogen; or C₁-C₅alkyl; Hal is a halogen atom; and wherein at least one of R₁₆, R₁₇, R₁₈, R₁₉ and R₂₀ is hydrogen; B₂ and B₃, independently from each other are C₆-C₁₀aryl; or a 5-7-membered heterocyclic compound, which may be substituted by C₁-C₁₂alkyl, C₁-C₁₂alkoxy, phenyl, hydroxy, halogen, sulfonic acid, carboxylate, or by the radical —NR₅₄R₅₅ or —OR₅₆; B₄ is C₆-C₁₀arylene, or a bivalent radical of a 5-7-membered heterocyclic compound, which may be substituted by C₁-C₁₂alkyl, C₁-C₁₂alkoxy, phenyl, hydroxy, halogen, sulfonic acid, carboxylate, or by the radical —NR₅₄R₅₅ or —OR₅₆; R₅₄, R₅₅ and R₅₆ independently from each other are hydrogen; or C₁-C₁₂alkyl, which may be substituted by hydroxy or C₆-C₁₀aryl; or R₅₄ and R₅₅ together with the linking nitrogen atom form a 5 to 7 membered heterocyclic ring; R₂₁ and R₂₂ independently from each other are hydrogen; C₁-C₂₀alkyl; C₁-C₂₀alkoxy; C₃-C₆cycloalkyl; C₅-C₁₀aryl; anellated aromatic groups; carboxylate; or sulfonate groups; R₂₃, R₂₄, R₂₅ and R₂₆ each independently from each other are hydrogen; unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C₁-C₁₄alkyl, C₂-C₁₄alkenyl, C₆-C₁₀aryl, C₆-C₁₀aryl-C₁-C₁₀alkyl or C₅-C₁₀alkyl(C₅-C₁₀aryl); or R₂₃ and R₂₄ and/or R₂₅ and R₂₆ together with the linking nitrogen atom form a 5 to 7 membered carbocyclic ring which may contain one or more than one hetero atom; or R₂₃ is linked to C₁ together with N⁺ forming a 5-7 membered carbocyclic ring; or R₂₄ is linked to C₂ together with N⁺ forming a 5-7 membered carbocyclic ring; G₁ and G₂ independently from each other are N; —O—; —S—; or a radical of CR₆₄; R₅₇ is hydrogen; C₁-C₁₄alkyl; C₂-C₁₄alkenyl; C₆-C₁₀aryl; C₅-C₁₀aryl-(C₁-C₁₀alkyl); or —C₁-C₁₀alkyl(C₅-C₁₀aryl); r is 0; or 1; and An is an anion.

5. Compounds according to claim 4, wherein Y is a radical of formula

[Image Omitted]

6. Compounds according to claim 1, wherein Z is selected from the radicals of formulae

[Image Omitted]

wherein L₃ and L₄ are defined as in claim 1.

7. A method of dyeing keratin-containing fibers comprising treating the fiber with at least one dye of formula (1) according to claim 1.

8. A method according to claim 7, wherein the dyeing is carried out in the absence of a reducing agent.

9. A method according to claim 7, wherein the dyeing is carried out in presence of a reducing agent.

10. A method according to claim 9, wherein the reducing agent is selected from thioglycol acid or salts thereof, gycerine monothioglycolate, cystein, 2-mercaptopropionic acid, 2-mercaptoethylamine, thiolactic acid, thioglycerine, sodium sulfite, dithionithe, ammonium sulfite, sodium bisulfite, sodium metabisulfite and hydrochinon.

11. A method according to claim 7, comprising treating the keratin-containing fiber (a) optionally with a reduction agent, and (b) at least one single dye of formula (1), and (c) optionally with an oxidizing agent.

12. A composition comprising at least one dye of formula (1) as defined in claim 1.

13. A composition according to claim 12 in form of a shampoo, conditioner, gel or emulsion.

14. A composition according to claim 12 comprising at least one single dye of formula (1) as defined in claim 1, and a direct dye and/or a reactive dye.