688746-20-5Relevant academic research and scientific papers
NOVEL O-AMINOPHENOL DERIVATIVES AND COLORANTS CONTAINING SAID COMPOUNDS
-
Page/Page column 14, (2010/02/15)
The invention relates to o-aminophenol derivatives of general formula (I) or to their physiologically compatible water-soluble salts. In said formula: X represents oxygen, sulphur or N-R4; R1, R2, R3 can be identical or different and independently of one another represent hydrogen, a halogen atom a cyano group, a C1-C4 alkoxy group, a C1-C6 alkyl group, a C1-C4 alkyl-thioether group, a mercapto group, a nitro group, a trifluoromethane group, a -C(O)H- group, a -C(O)CH3- group, a -C(O)CF3- group, a -Si(CH3)3- group, a C1-C4 hydroxy alkyl group or an aminomethyl group; R4 represents hydrogen, a C1-C6 alkyl group, a C1-C4 hydroxyalkyl group, a phenyl group or an acetyl group. The invention also relates to colorants containing said compounds for use on keratin fibres.
