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

1985-10-03

1987-04-28

Hollrah, Glennon H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260378, C07C143665, C07C 9724

Patent

active

046612920

ABSTRACT:
The invention relates to a process for the preparation of 1,4-diamino-2,3-dicyanoanthraquinone, starting from 1,4-diaminoanthraquinones, or salts thereof, of the formula ##STR1## wherein n is 0, 1 or 2. To introduce the two cyanide radicals, the starting material is treated, in the presence of an oxidizing agent, with a compound which donates cyanide ions. The process comprises using as solvent a mixture of a carboxamide, an N-alkylated carboxamide or a lactam and water, which mixture contains more than 10% by weight of water.
1,4-Diamino-2,3-dicyanoanthraquinone is an important intermediate for the synthesis of textile dyes.

REFERENCES:
patent: 4294769 (1981-10-01), Krock et al.
patent: 4299771 (1981-11-01), Takeshita et al.
patent: 4422973 (1983-12-01), Krock et al.

Affiliated with

Also associated with

Rating

Process for the preparation of 1,4-diamino-2,3-dicyanoanthraquin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of 1,4-diamino-2,3-dicyanoanthraquin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 1,4-diamino-2,3-dicyanoanthraquin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-476191