Dichloromethane → N-Phenyl-N'-[2-(2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)ethyl]urea hydrochloride

Participants

Reaction Steps

tert-Butyl 6-{2-[(anilinocarbonyl)amino]ethyl}-1,4,5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylate (0.0390 g, 0.0869 mmol) was dissolved in CH2Cl2 (2 mL) at rt. CF3CO2H (1 mL) was added, then the reaction mixture was stirred for 45 min. The reaction mixture was concentrated and the residue was taken up in EtOAc (2 mL). 1 N HCl in Et2O (2 mL) was added and the precipitated salt was collected by filtration. N-Phenyl-N′-[2-(2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)ethyl]urea hydrochloride (0.0296 g) was obtained in 88% yield. 1H NMR (300 MHz, CD3OD) δ 3.19-3.22, 3.35-3.38, 3.43-3.53, 4.35, 6.97-7.03, 7.07, 7.17, 7.25-7.27, 7.44, 7.48; MS (ESI+) for C21H24N4O m/z 349.2 (M+H)+.

Provenance & Evidence