Oxalic acid dihydrate → HCID 178509543, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 0,6 g (3,3 mmol) 1,2-diamino-5-cyanonaphthalene and 1,4 g oxalic acid dihydrate in 35 ml 0,5N hydrochloric acid was refluxed for 3 h. After cooling to 25° C., the precipitate was filtered off and washed with water. The crude product was recrystallized (dimethylsulfoxide-methanol) to give 0,35 g (45%) 2,3-dihydroxy-7-cyano-benzo[f]quinoxaline, m.p. >300° C. IR (KBr): 2190 cm-1 (nitrile function).

Provenance & Evidence