Preparation of aminoanthraquinones from nitroanthraquinones

Details Preparation of aminoanthraquinones from nitroanthraquinones Preparation of aminoanthraquinones from nitroanthraquinones

1976-06-04

1978-02-28

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 8767, C07C 9724

Patent

active

040767361

ABSTRACT:
In the reaction of a nitroanthraquinone with ammonia in a solvent at elevated temperature to produce the corresponding aminoanthraquinone, the improvement which comprises effecting the reaction in the presence of an ammonium halide. Advantageously, the nitroanthraquinone is an .alpha.-nitroanthraquinone, the ammonium halide is at least one of ammonium chloride and ammonium bromide, and the solvent comprises at least one member selected from the group consisting of water, nitrobenzene, a glycol, an acid amide and sulfolane.

REFERENCES:
patent: 3933866 (1976-01-01), Seha
patent: 3933867 (1976-01-01), Thiem et al.
patent: 3969374 (1976-07-01), Thiem et al.

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