Nitric Acid → 5,5-dimethyl-8-nitro-2,3,4,5-tetrahydro-1H-benzo[b]azepine

Participants

Reaction Steps

H2SO4 (2.5 ml) was cooled in a brine/ice bath. 5,5-Dimethyl-2,3,4,5-tetrahydro-1H-benzo[b]azepine (1.1 g, 6.3 mmol) was added drop wise. The resulting slurry was stirred for 30 min. HNO3 (0.26 ml, 6.3 mmol) and more H2SO4 (1.5 ml) were added slowly. The reaction was stirred at 0-15° C. for 2 h, poured into ice water, extracted with EtOAc, washed with brine, dried (MgSO4), filtered and concentrated to give 5,5-Dimethyl-8-nitro-2,3,4,5-tetrahydro-1H-benzo[b]azepine.

Provenance & Evidence