Process for the production of amino-anthraquinone

Details Process for the production of amino-anthraquinone Process for the production of amino-anthraquinone

1973-08-06

1976-06-29

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 8511, C07C 9724

Patent

active

039667740

ABSTRACT:
The present invention concerns a novel improvement in the catalytic hydrogenation of nitroanthraquinones to produce aminoanthraquinones, comprising over-hydrogenating the resulting aminoanthraquinone to the corresponding nuclear hydrogenated aminoanthraquinone and, after removal of the aminoanthraquinone, oxidising the remaining nuclear-hydrogenated aminoanthraquinone to aminoanthraquinone. Aminoanthraquinones are useful as intermediates in the production of anthraquinone dyestuffs.

REFERENCES:
patent: 1691428 (1928-11-01), Berthold
Weygand, Preparative Organic Chemistry, pp. 557-560, (1972).

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