Process for the preparation of a mixture of 1-amino-2-chloro-4-h

Details Process for the preparation of a mixture of 1-amino-2-chloro-4-h Process for the preparation of a mixture of 1-amino-2-chloro-4-h

1987-06-10

1988-08-30

Hollrah, Glennon H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260381, C07C 9726

Patent

active

047675730

ABSTRACT:
A process for the preparation of a mixture of 1-amino-2-chloro-4-hydroxyanthraquinone and 1-amino-2-bromo-4-hydroxyanthraquinone, which mixture contains a high proportion of 1-amino-2-chloro-4-hydroxyanthraquinone, by chlorinating and brominating 1-aminoanthraquinone and reacting the intermediate so obtained with concentrated or fuming sulfuric acid.

REFERENCES:
patent: 3530151 (1970-09-01), Hoare
patent: 4235789 (1980-11-01), Stout
patent: 4292247 (1981-09-01), Nishikuri et al.
patent: 4648994 (1987-03-01), Muller et al.

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