Preparation of 1-amino-4-hydroxyanthraquinone

Details Preparation of 1-amino-4-hydroxyanthraquinone Preparation of 1-amino-4-hydroxyanthraquinone

1993-12-13

1995-06-13

Mars, Howard T.

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

Organic compounds

Polycyclo ring system containing anthracene configured ring...

C07C22536, C09B 1503

Patent

active

054244617

ABSTRACT:
A process for preparing 1-amino-4-hydroxyanthraquinone by treating 1,4-dihydroxyanthraquinone with ammonia in an aqueous medium comprises treating with ammonia in the presence of a base and of a catalytic amount of a reducing agent at from 60.degree. to 150.degree. C. and at from 1 to 30 bar.

REFERENCES:
patent: 2183652 (1939-12-01), Lord et al.
Foster, The Elements of Chemistry, 1937, p. 181.

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