Nitric Acid → HCID 178514504, compound

Participants

Reaction Conditions

Reaction Steps

15 ml 89% nitric acid was ice-cooled and then gradually added 1 g (4,2 mmol) 6-azido-7-chloro-2,3-dihydroxyquinoxaline. After stirring at 0° C. for 15 min, the reaction mixture was poured into 100 ml ice-water. The crude product was recrystallized (acetone-methanol-water) to give 0,95 g (80%) 6-azido-7-chloro-2,3-dihydroxy-5-nitroquinooxaline. IR (KBr): 2450 cm-1 (N3). NMR (DMSO-d6) 12.3 (2H, broad s), 7.07 (1H,s).

Provenance & Evidence