3-substituted para-amino phenols and their use as oxidation dye precursors in compositions for dyeing kerafinous fibers

US5084067A · kind A · utility

Assignee

• L'Oreal · FR

Inventors

• Alex Junino · Livry-Gargan, FR
• Alain Genet · Aulnay-sous-Bois, FR
• Gerard Lang · Saint-Gratien, FR

Key dates

• Filing date: Feb 28, 1989
• Grant date: Jan 28, 1992
• Expiry date: Feb 28, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C323/36
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

3-Substituted para-aminophenols of general formula: ##STR1## where X.dbd.H, halogen; Y.dbd.O--, --S--; R.dbd.alkyl, hydroxyalkyl, C.sub.1-4 aminoalkyl or C.sub.3 -C.sub.6 polyhydroxyalkyl; PA1 with the proviso that, when X.dbd.H, R is not methyl, and when X.dbd.H and Y.dbd.O, R is not ethyl; PA1 process for preparing them, intermediate compounds of formula: ##STR2## where X.sub.1 =halogen, Y and R have the meaning stated above; with the proviso that, when Y.dbd.O, R is not methyl, and when R=aminoalkyl, X.sub.1 can also denote hydrogen; PA1 dyeing compositions containing one or more compounds of formula (I), and a process for dyeing human hair.