Preparation of 1-amino-2-phenoxy-4-hydroxyanthraquinone

Details Preparation of 1-amino-2-phenoxy-4-hydroxyanthraquinone Preparation of 1-amino-2-phenoxy-4-hydroxyanthraquinone

1980-03-07

1981-07-14

Garvin, Patrick

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 9726

Patent

active

042786061

ABSTRACT:
In a process for the preparation of 1-amino-2-phenoxy-4-hydroxyanthraquinone by reacting 1-amino-2-halogeno-4-hydroxyanthraquinone with a phenol in an alkaline aqueous medium at an elevated temperature, the improvement that 1-amino-2-chloro-4-hydroxyanthraquinone is reacted in aqueous suspension, at a pH of from 9 to 13 and at from 120.degree. to 150.degree. C., with the phenol in the presence of

REFERENCES:
patent: 3704252 (1972-11-01), Bien et al.
patent: 3822992 (1974-07-01), Hederich et al.
Japanese Printed Application, 37432/1973 (English Abstract).
Zh. Prikl. Khim. 49, (1976), 4, pp. 904-905.

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