Process for the manufacture of anthraquinone compounds

Details Process for the manufacture of anthraquinone compounds Process for the manufacture of anthraquinone compounds

1980-01-28

1983-07-12

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260366, C07C 9724

Patent

active

043930077

ABSTRACT:
A process for the manufacture of 1,4-diamino anthraquinone or quaternized -1,4-diamino-anthraquinone; and by reacting .alpha.-nitro-anthraquinone with an amine of the formula ##STR1## to give 1-aminoanthraquinone (B), halogenating, preferably brominating, the compound (B) to give 1-amino-4-halogeno- or 1-amino-2,4-dihalogeno-anthraquinone (C), condensing the compound (C) with a diamine of the formula ##STR2## or with an amine of the formula HN--R.sub.3 R.sub.7 to give 1,4-diamino-anthraquinone (D) and optionally subsequently quaternizing the compound (D) to give a quaternized anthraquinone compound which process comprises carrying out the reaction from A to E or A to D in one single operation without isolation of the intermediates.

REFERENCES:
patent: 2112258 (1938-03-01), Wilder
patent: 2128178 (1938-08-01), Dettwyler
patent: 2487045 (1949-11-01), Dickey
patent: 3123605 (1964-03-01), Turetzky et al.
patent: 3821262 (1974-06-01), Schoenauber et al.
patent: 3823169 (1974-07-01), Staub
Anthracene and Anthraquinone, Ede Barry Barnett, N.Y., 1949, pp. 194-197, 200, 172.

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