Process for the preparation of 1,4-diamino-2,3-dicyano-anthraqui

Details Process for the preparation of 1,4-diamino-2,3-dicyano-anthraqui Process for the preparation of 1,4-diamino-2,3-dicyano-anthraqui

1981-01-15

1983-12-27

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260378, C07C 9724

Patent

active

044229739

ABSTRACT:
1,4-Diamino-2,3-dicyano-anthraquinone is obtained in good yields and in high purity by reacting 1-amino-4-bromo-anthraquinone-2-sulphonic acid with ammonia and then reacting the 1,4-diamino-anthraquinone-2-sulphonic acid, which is not isolated as an intermediate, with cyanide ions, in formamide or N-methylformamide.

REFERENCES:
patent: 1586911 (1926-06-01), Moser
patent: 1938029 (1933-12-01), Kugel
patent: 2496414 (1950-02-01), Seymour et al.
patent: 2587002 (1952-07-01), Seymour et al.
patent: 3234242 (1966-02-01), Jost et al.
patent: 4294769 (1981-10-01), Krock et al.
Methoden Der Organischen Chemie (Houben-Weyl), Muller & Bayer, Band VII/3c, 1979.
Chemical Abstract, vol. 72, #56697m "1-Aminoanthraquinone", 1969.

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