HCID 15066352, compound → HCID 178516982, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2,0 g (4,6 mmol) 1,2-diethoxalylamino-4-bromonaphthalene in 50 ml 2N hydrochloric acid and 25 ml acetic acid was refluxed for 1,5 h. After cooling to 25° C., the precipitate was filtered off. The crude product was recrystallized (dimethylformamide-water) to give 1,2 g ( 90%) of pure 6-bromo-2,3-dihydroxybenzo(f)quinoxaline, m.p. > 300° C.1H NMR (DMSO-d6): 8,8 (1H,m), 8,3 (1H,m), 7,87 (1H,s), 7,7 (2H,m).

Provenance & Evidence