Methanol → HCID 9834518, compound

Participants

Reaction Steps

A solution of 2,2,2-trifluoro-1-(1,2,4,5-tetrahydro-3H-[1,4]diazepino[1,7-a]indol-3-yl)-1-ethanone (448 mg, 1.6 mmol) in dichloromethane (20 mL) is treated with chlorosulfonyl isocyanate (0.19 mL, 2.1 mmol). The resulting golden homogenous solution is stirred for 1 hour and treated with methanol (10 mL) and a solution of 25% sodium methoxide in methanol (2 mL, 8.8 mmol). The reaction mixture quickly turns to a white suspension and after 30 min is filtered to give a crude white solid. This material is triturated with hot methanol, filtered through a pad of celite, and concentrated to 184 mg of a white solid that is further purified by LC (230-400 silica gel) eluting with 9:1:89 methanol/NH4OH/dichloromethane to afford 137 mg of 2,3,4,5-tetrahydro-1H-[1,4]diazepino[1,7-a]indole-11-carboxamide as a white solid. IR (drift) 3353, 3341, 3173, 1641, 1602, 1549, 1463, 1432, 1418, 1322, 1314, 778, 740, 729, 654 cm−1.

Provenance & Evidence