Oxidation hair dyes containing 3-aminophenol derivatives, and novel 3-aminophenol derivatives

Agent for dyeing keratin fibers based on a developer-coupler combination and characterized in that it contains at least one 3-aminophenol derivative of formula (I) or a physiologically compatible, water-soluble salt thereof

• 10
• wherein R1 denotes a group of formula (II) or (III)
• 11
• wherein R2, R3, R4, R5 and R6 independently of each other denote hydrogen, a halogen atom, a cyano group, hydroxyl group, (C1-C4)-alkoxy group, a phenoxy group, a (C1-C4)-hydroxyalkoxy group, a (C1-C6)-alkyl group, a phenyl group, a (C1-C4)-alkyl thioether group, a mercapto group, a nitro group, an amino group, a (C1-C4)-alkylamino group, a hydroxy(C2-C4)alkylamino group, a di(C1-C4)alkylamino group, a di[hydroxy(C2-C4)alkyl]amino group, a [dihydroxy(C3-C4)alkyl]-amino group, a [hydroxy(C2-C4)alkyl]-(C1-C4)-alkylamino group, a trifluoromethyl group, a —C(O)H group, a —C(O)CH3 group, a —C(O)CF3 group, a —Si(CH3)3 group, a (C1-C4)-hydroxyalkyl group, a (C2-C4)-dihydroxyalkyl group, a (C1-C4)-aminoalkyl group or a (C1-C4)-cyanoalkyl group, or two adjacent R2 to R6 groups form an —O—CH2—O-bridge;
• X1, X2, X3, X4 and Xs independently of each other denote nitrogen or a C—R7 group, C—R8 group, C—R9 group, C—R10 group or C—R11 group, provided that at least one and at the most three of the X1 to X5 groups denote nitrogen;
• and
• R7, R8, R9, R10 and R11 independently of each other denote hydrogen, a halogen atom, a cyano group, a (C1-C6)-alkyl group, a (C1-C4)-alkyl thioether group, a mercapto group, a nitro group, an amino group a (C1-C4)-alkylamino group, a di(C1-C4)alkylamino group, a trifluoromethyl group, a —C(O)H group, a —C(O)CH3 group, a —C(O)CF3 group, a —Si(CH3)3 group, a —C(O)—NH2 group, a (C1-C4)-hydroxyalkyl group or a (C2-C4)-dihydroxyalkyl group.