The present invention has for an object compounds of formula (I) and colorants containing these 4-aminobiphenyl-3-ol derivatives of general formula (I) for dyeing keratin fibers, particularly hair,
wherein
R1 and R2 independently of each other denote hydrogen, a halogen atom, a cyano group, a hydroxyl group, a C
1
-C
4
-alkoxy group, a C
2
-C
4
-hydroxyalkoxy group, a C
1
-C
6
-alkyl group, a nitro group, a trifluoromethyl group, a —C(O)H group, a —C(O)CH
3
group, a —C(O)CF
3
group, an —Si(CH
3
)
3
group or a C
1
-C
6
-hydroxyalkyl group or R1 and R2 together form an —O—CH
2
—O— bridge.
本发明的目的是提供一种式(I)的化合物以及包含这些
4-氨基联苯-3-
酚衍
生物的
染料,用于染色角蛋白纤维,特别是头发。其中,R1和R2各自独立地表示氢,卤素原子,
氰基,羟基,C1-C4-烷氧基,C2-C
4-羟基烷氧基,C1-C6-烷基,硝基,三
氟甲基基团,—C(O)H基团,—C(O)
CH3基团,—C(O)
CF3基团,—Si( )3基团或C1-C6-羟基烷基,或者R1和R2一起形成一个—O—
CH2—O—桥。