Triarylmethane dyes

A method of dyeing keratin-containing fibers comprising treating the fiber with at least one compound of formula (1)

• D1-(Z1)r—Y1—S-A (1)
• wherein
• A is hydrogen;
• a radical of formula (1b) *—S—Y2—(Z2)r-D2;
• or a radical of formula
• *—S—Y3 (1c)
• Y1 and Y2 independently from each other are unsubstituted or substituted, straight-chain or branched, interrupted or uninterrupted C1-C10alkylene;
• C6-C10cycloalkylene;
• C6-C10arylene;
• or —C6-C10arylene-(C1-C10alkylene);
• Y3 is an unsubstituted or substituted, straight-chain or branched, interrupted or uninterrupted C1-C10alkyl;
• C6-C10cycloalkyl;
• C6-C10aryl;
• or —C6-C10aryl-(C1-C10alkyl);
• Z1 and Z2 independently from each other are *—(CH2)p—C(O)—**;
• *—(CH2CH2—O)s—**;
• *—(CH2)p—C(O)O—**;
• *—(CH2)p—OCO—**;
• *—(CH2)p—N(R1)—**;
• *—(CH2)p—CON(R1)—**;
• *—(CH2)P—(R1)NC(O)—**;
• —O—;
• —S—;
• —S(O)—;
• —S(O)2—;
• or a cationic biradical of a substituted or unsubstituted aromatic or heteroaromatic compound of the formula
• the asterix * indicates the linkage to D1 and/or D2;
• the asterix ** indicates the linkage to Y1 and/or Y2;
• W1 is N or a radical of CR5;
• R1, R2, R3, R4 and R5 independently from each other are hydrogen;
• C1-C14alkyl;
• C2-C14alkenyl;
• C5-C10aryl;
• C6-C10aryl-(C1-C10alkyl);
• or —C1-C10alkyl(C6-C10aryl);
• D1 and D2 independently from each other are hydrogen;
• or the residue of an organic dye selected from the radical of formula
• wherein
• B1 and B2, 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 —NR6R7 or —OR6;
• B3 is C6-C10 arylene, 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 —NR6R7 or —OR6;
• R6 and R7 independently from each other are hydrogen;
• or C1-C12alkyl, which may be substituted by hydroxy or C6-C10aryl;
• or
• R6 and R7 together with the linking nitrogen atom form a 5 to 7 membered heterocyclic ring;
• or
• R6 and R7 together with the linking nitrogen atom form a piperidine ring;
• An is an anion;
• p is a number from 0 to 5;
• r is 0 or 1;
• and
• s is a number from 1 to 5.

A composition comprising at least one compound of formula (1)

• D1-(Z1)r—Y1—S-A (1)
• wherein
• A is hydrogen;
• a radical of formula (1b) *—S—Y2—(Z2)r-D2;
• or a radical of formula
• *—S—Y3 (1c)
• Y1 and Y2 independently from each other are unsubstituted or substituted, straight-chain or branched, interrupted or uninterrupted C1-C10alkylene;
• C5-C10cycloalkylene;
• C5-C10arylene;
• or C5-C10arylene-(C1-C10alkylene);
• Y3 is an unsubstituted or substituted, straight-chain or branched, interrupted or uninterrupted C1-C10alkyl;
• C5-C10cycloalkyl;
• or —C5-C10aryl-(C1-C10alkyl);
• Z1 and Z2 independently from each other are *—(CH2)p—C(O)—**;
• *—(CH2CH2—O)s—**;
• *—(CH2)p—C(O)O—**;
• *—(CH2)p—OCO—**;
• *—(CH2)p—N(R1)—**;
• *—(CH2)p—CON(R1)—**;
• *—(CH2)p—(R1)NC(O)—**;
• —O—;
• —S—;
• —S(O)—;
• —S(O)2—;
• or a cationic biradical of a substituted or unsubstituted aromatic or heteroaromatic compound of the formula
• wherein
• the asterix indicates the linkage to D1 and/or D2;
• the asterix ** indicates the linkage to Y1 and/or Y2;
• W1 is N or a radical of CR5;
• R1, R2, R3, R4 and R5 independently from each other are hydrogen;
• C1-C14alkyl;
• C2-C14alkenyl;
• C5-C10aryl;
• C5-C10aryl-(C1-C10alkyl);
• or —C1-C10alkyl(C5-C10aryl);
• D1 and D2 independently from each other are the residue of an organic dye selected from the radical of formula
• wherein
• B1 and B2, 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 —NR6R7 or —OR6;
• B3 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 —NR6R7 or —OR6;
• R6 and R7 independently from each other are hydrogen;
• or C1-C12alkyl, which may be substituted by hydroxy or C6-C10aryl;
• or
• R6 and R7 together with the linking nitrogen atom form a 5 to 7 membered heterocyclic ring;
• or
• R6 and R7 together with the linking nitrogen atom form a piperidine ring;
• An is an anion;
• p is a number from 0 to 5;
• r is 0 or 1;
• and
• s is a number from 1 to 5.