2-alkyl-4-methoxy-5-aminophenol or salt thereof, or 2-alkyl-4-me

Details 2-alkyl-4-methoxy-5-aminophenol or salt thereof, or 2-alkyl-4-me 2-alkyl-4-methoxy-5-aminophenol or salt thereof, or 2-alkyl-4-me

1990-07-27

1991-05-14

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

8412, 8421, 8424, 564443, 568706, A61K 713

Patent

active

050152602

ABSTRACT:
A 2-alkyl-4-methoxy-5-aminophenol or a salt thereof; a 2-alkyl-4-methoxy-5-nitrophenol or 2-alkyl-4-methoxy-5-nitrophenyl mesylate, each an intermediate in the preparation of the 2-alkyl-4-methoxy-5-aminophenol; and a dyeing composition for keratin fibers comprising a color-developing material and the 2-alkyl-4-methoxy-5-aminophenol or the salt thereof as a coupling agent are disclosed.
Further, a 2-alkyl-4-methoxy-5-substituted aminophenol or a salt thereof; a 2-alkyl-4-methoxy-5-substituted aminophenol derivative, whcih is an intermediate in the preparation of the 2-alkyl-4-methoxy-5-substituted aminophenol; and a dyeing composition for keratin fibers comprising a color-developing material and the 2-alkyl-4-methoxy-5-substituted aminophenol or the salt thereof as a coupling agent are disclosed.

REFERENCES:
Senoh and Sakan, "Synthesis of DL-3,6-Dihydroxykynurenine", Chem. Abstracts, 52-7157e; 1958 (4-nitro-2,5-dimethoxybenzoicacid).

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