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

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

1987-03-16

1988-04-19

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

544 69, 558289, C07C 9724

Patent

active

047388005

ABSTRACT:
There is disclosed a process for the preparation of 1,4-diamino-2,3-dicyanoanthraquinones by reacting compounds of formula ##STR1## wherein X.sub.1 and X.sub.2 are hydroxyl, halogen, acetate or sulfato ester, or, when taken together, are an oxygen atom attached by a double bond to the boron atom, R is a substituent and n is 0, 1 or 2, with an inorganic cyanide in a polar aprotic solvent and in the presence of an oxidizing agent, and subsequently hydrolyzing the reaction product.

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patent: 4661292 (1987-04-01), Schaulin et al.

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