Colorants for keratin fibers, the 4 - mono indolyl 1,2 - naphthoquinones, 4 - mono indolyl 1,2 - naphthoquinones

摘要

Composition for dyeing keratin fibres, containing, in a medium suitable for dyeing, at least one compound corresponding to one of the two following formulae: & br / (see appended drawing in bopi) & br / & & br / in which: & br / r denotes a group of formula: & br / (see appended drawing in bopi) & br / & & br / in which: & br / & r1 denotes hydrogen or alkyl or a covalent bond; & br / r2 represents hydrogen, alkyl, phenyl or a covalent bond; & br / r3 represents an alkyl or a covalent bond; & br / one and only one of the radicals r1 to r3 is a covalent bond; & br / r4 to r7 are identical or different, represent hydrogen, halogen, alkyl, alkoxycarbonyl, acyl, acyloxy, cyano, amino, optionally monosubstituted, no2, oh, alkoxy, benzyloxy, & br / at most two may designate oh, alkoxy or benzyloxy; & br / at most only one can represent a halogen, no2, alkoxycarbonyl, acyl, cyano, amino, optionally substituted, or acyloxy; & br / r5 and r6 may designate methylenedioxy radicals;