Naphthalene derivatives and colorants for keratin fibers containing these compounds

An agent for coloring keratin fibers, said agent containing

• at least one cosmetic ingredient selected from the group consisting of oxidants, perfume oils, complexing agents, waxes, preservatives, thickeners, alginates, guar gum, lanolin derivatives, anionic surface-active substances, cationic surface-active substances, nonionic surface-active substances, amphoteric surface-active substances, natural polymers, synthetic polymers, modified polymers of natural origin, nitro dyes, azo dyes, anthraquinone dyes and triphenylmethane dyes;
• and
• at least one naphthalene derivative of formula (I):
• wherein A1 and A2 are different from each other and, independently of each other, each denote a partial structure of formula (II), (IIIa), (IIIb), (IV), (V), or (VI):
• E denotes oxygen or a sulfur atom;
• Y denotes a nitrogen atom or a quaternary nitrogen atom substituted with branched or linear C1-C6-alkyl groups, branched or linear C2-C4-hydroxyalkyl groups or branched or linear C4-C6-polyhydroxyalkyl groups;
• R1 denotes a hydrogen atom, an aromatic or heterocyclic group of general formula (VII), (VIII), (IX), (X), (XI), (XII), (XIII), (XIV), (XV) or (XVI),
• or an aliphatic C1-C6-alkyl group that is linear or branched and is unsubstitued or substituted with one or more hydroxyl groups or with cationic groups of a B+ type;
• R1a has the same meaning as R1, except that R1a is not hydrogen;
• R2 and R3 are the same or different and, independently of each other, each denote hydrogen, an amino group, a C1-C6-alkylamino group, a C1-C6-N, N-dialkylamino group, a C1-C6—N,N-(dihydroxyalkyl)-amino group, fluorine, chlorine, bromine, iodine, a cyano group, a C1-C6-alkylcyano group, a methoxymethyl group, a tert.-butyl group, an isopropyl group, a C1-C6-alkyl group, a C1-C6-alkyloxy group, a C1-C6-hydroxyalkyl group, a C1-C6-hydroxyalkyloxy group, a C1-C6-alkylcarboxylic acid group, a C1-C6-alkylcarboxylate ester group, a C1-C6-alkylcarboxamide group, a C1-C6-alkylsulfonic acid group, a C1-C6-alkysulfonate ester group, a C1-C6-alkylsulfonamide group, a phenyl group, a sulfonic acid group or an -(L)-B+ group;
• R4 and R5 are the same or different and, independently of each other, each denote hydrogen, a C1-C6-alkylamino group, a C1-C6N,N-dialkylamino group, a C1-C6-alkylcyano group, a methoxymethyl group, a tert. butyl group, an isopropyl group, a C1-C6-alkyl group, a C1-C6-alkyloxy group, a C1-C6-hydroxyalkyl group, a C1-C6-alkylcarboxylic acid group, a C1-C6-alkylcarboxylate ester group, a C1-C6-alkylcarboxamide group, a C1-C6-alkylsulfonic acid group, a C1-C6-alkylsulfonate ester group, a C1-C6-alkylsulfonamide group, a phenyl group or an -(L)-B+ group;
• L stands for a C1-C6-alkylene group;
• B+ denotes an aromatic heterocyclic quaternary ammonium compound, a nonaromatic heterocyclic quaternary ammonium compound, a quaternary alkylammonium compound or an arylammonium compound of formula NRaRbRc, wherein Ra, Rb and Rc, independently of each other, denote a benzyl group, a phenyl group or a C1-C6-alkyl group, wherein said alkyl groups are unsubstituted or substituted with one or more hydroxyl groups or with one or more amino groups;
• or B+ denotes a quaternary phosphonium group;
• and
• X− denotes an anion.