Process for preparing aminoanthraquinones

Details Process for preparing aminoanthraquinones Process for preparing aminoanthraquinones

1975-12-18

1977-09-06

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260377, 260378, C09B 116, C09B 136, C09B 150

Patent

active

040467856

ABSTRACT:
A process for preparing aminoanthraquinones of high purity, which comprises catalytically hydrogenating nitroanthraquinones in the suspended state in an aqueous medium in the presence of a hydrogenating catalyst. In a preferred embodiment, the catalytic hydrogenation may be carried out in the presence of an organic or inorganic base, followed, if desired, by oxidizing the hydrogenation product.

REFERENCES:
patent: 1957920 (1934-05-01), Whelen
patent: 1957936 (1934-05-01), Buxbaum
patent: 2653954 (1953-09-01), Weinmayr
patent: 3060200 (1962-10-01), Buecheler
House, "Modern Synthetic Reaction", 2nd Ed., W. A. Benjamin, Inc., Menlo Park, Cal. (1972), pp. 1-10 and 210.

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