Hydrochloric Acid → HCID 178507220, compound

Participants

Reaction Steps

A solution of 0,5 g (1,49 mmol) 2,3-dihydroxy-6-nitro-7-sulphamoyl-benzo[f]quinoxaline in 75 ml dimethylformamide was hydrogenated at atm. pressure by using ca. 1 g Ra-Ni as a catalyst. The filtered reaction mixture was added 5 ml 1N hydrochloric acid, and then evaporated in vacuo. The crude product was recrystallized (dimethylformamide-water) to give 0,2 g (40%) 6-amino-2,3-dihydroxy-7-sulphamoyl-benzo[f]quinoxaline as a hydrochloride salt.

Provenance & Evidence