Process for the manufacture of anthraquinone compounds

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

1984-09-19

1987-04-07

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260366, 260381, C07C 9724

Patent

active

046559701

ABSTRACT:
A process for the manufacture of quaternized diaminoanthraquinones 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 HNR.sub.3 R.sub.7 to give 1,4-diaminoanthraquinone (D) and subsequently quaternizing compound (D) to give the corresponding quaternized anthraquinone compound (E) which process comprises carrying out the condensation of compound (C) with the amine to form compound (D) and subsequent quaternization steps in one single operation without isolation of the intermediate (D).

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), Schoehauber et al.
patent: 3823169 (1974-07-01), Staub
patent: 4246172 (1981-01-01), Boehmke et al.
patent: 4296044 (1981-10-01), Duchardt et al.
patent: 4393007 (1983-07-01), Priester et al.
Barnett, Anthracene and Anthraquinone, 1949, 194-197, 200, 172.

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