Ammonia → HCID 86693521, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of ethyl 9-iodo-4,5-dihydrobenzo[b]pyrazolo[1,5-d][1,4]oxazepine-2-carboxylate (300 mg, 0.78 mmol) in 7 M ammonia solution (in methanol, 3 ml) was heated in a microwave apparatus to 130° C. for 70 minutes. After cooling the volatiles were removed in vacuo and the residue was purified by FCC (silica, 20-100% ethyl acetate in heptane) to give 99 mg (36%) of the title compound as an off-white solid. 1H NMR (DMSO, 500 MHz) δ 3.17 (2H, t, J=5.8 Hz), 4.47 (2H, t, J=5.9 Hz), 6.71 (1H, s), 7.03 (1H, d, J=8.5 Hz), 7.36 (1H, s), 7.66 (1H, dd, J=8.5, 2.2 Hz), 7.81 (1H, s), 8.29 (1H, d, J=2.2 Hz); M+1=356

Provenance & Evidence