Method for producing bis(3-amino-4-hydroxyphenyl) compounds

Details Method for producing bis(3-amino-4-hydroxyphenyl) compounds Method for producing bis(3-amino-4-hydroxyphenyl) compounds

1998-07-28

1999-11-02

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564418, 564366, 564430, 564315, C07C20936

Patent

active

059774134

ABSTRACT:
Disclosed is a method for producing bis(3-amino-4-hydroxyphenyl) compounds, which comprises reducing bis(3-nitro-4-hydroxyphenyl) compounds with hydrazines in the presence of a catalyst. The method produces bis(3-amino-4-hydroxyphenyl) compounds of high quality under mild conditions at high yields. The products can be isolated and purified in a simple manner to have a higher purity. The method is suitable to industrial-scale production of the products.

REFERENCES:
CA:95:186744 abs of Synthesis, by Ayyangar 8 pp. 640-3, 1981.
CA:120:244694 abs of JP05310698, 1992.
CA:67:21604 abs of GB1047607, 1966.
CA:80:145765 abs of SU420617, 1972.

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