Novel p-aminophenol derivatives and the use thereof

Details Novel p-aminophenol derivatives and the use thereof Novel p-aminophenol derivatives and the use thereof

C - Chemistry, Metallurgy

07

C

C07C 217/76 (2006.01) C07C 215/76 (2006.01)

Patent

CA 2315197

Compounds of general formula (I), wherein A, B,C and D represent, independently from each other, an -OH- or -NHR- group, wherein R stands for a hydrogen atom or a C1-4 alkyl radical, with the proviso that A, B, C or D respectively stands for a hydroxy group, X stands for oxygen, sulphur, a sulfoxy or sulfoxyl group, R1 and R2 represent, independently from each other, hydrogen, fluorine, chlorine, a C1-4 alkyl or hydroxyalkyl group or a C2-4- dihydroxy-alkyl group, preferably a C2-dihydroxy alkyl group, and the physically acceptable salts of these compounds are highly suitable for use as developer components in oxidation coloring agents.

L'invention concerne des composés correspondant à la formule générale (I), dans laquelle: A, B, C et D représentent, indépendamment l'un de l'autre, un groupe -OH ou -NHR, dans lequel R représente un atome d'hydrogène ou un reste alkyle C¿1-4?, à condition que, dans chaque cas, soit A, soit B, et C ou D représentent un groupe hydroxy; R?1¿ et R?2¿ représentent, indépendamment l'un de l'autre, hydrogène, fluor, chlore, un groupe alkyle C¿1-4? ou un groupe hydroxyalkyle C¿1-4?, ou bien un groupe dihydroxyalkyle C¿2-4?, de préférence un groupe dihydroxyalkyle C¿2?. Ces composés et leurs sels physiologiquement compatibles conviennent, de façon remarquable, pour une utilisation en tant que composants développeurs dans des colorants d'oxydation.

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