Preparation and oxidation of 4-acylamino-anthrones

Details Preparation and oxidation of 4-acylamino-anthrones Preparation and oxidation of 4-acylamino-anthrones

1976-02-19

1977-12-13

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260377, C07C 6344, C09B 100

Patent

active

040628752

ABSTRACT:
A 2-acylamino-2'-carboxy-diphenylmethane is treated with an acid condensing agent such as sulfuric acid or chlorosulfonic acid thereby to produce the corresponding 4-acylamino-anthrone which can then be oxidized, as with hydrogen peroxide or oxygen, to the corresponding 1-acylamino-anthraquinone.

REFERENCES:
patent: 1906581 (1933-05-01), Gubelmann et al.
patent: 1916216 (1933-07-01), Gubelmann et al.
patent: 3835167 (1974-09-01), Pfister
Lubs, "The Chemistry of Synthetic Dyes and Pigments," Hafner Publishing Co., N.Y. (1955), p. 342.

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