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

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

1989-09-07

1991-03-05

Raymond, Richard L.

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

Organic compounds

Polycyclo ring system containing anthracene configured ring...

C07C 9724

Patent

active

049979604

ABSTRACT:
1-Amino-2-chloro-4-hydroxyanthraquinone (I) ##STR1## in prepared by chlorinating 1-amino-4-hydroxyanthraquinone (II) ##STR2## by a process in which the chlorination is carried out in 90-100% strength by weight sulfuric acid or in not more than 2% strength by weight oleum.

REFERENCES:
patent: 3631074 (1971-12-01), Bien et al.

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