m-Chloroperbenzoic acid → 5-[10-Chloro-7-(1-ethylpropyl)-2,3,4,5-tetrahydro-1H-[1,3]diazepino[1,2-a]benzimidazol-1-yl]-N,N,4-trimethylpyridin-2-amine 1-oxide

Participants

Reaction Steps

To a solution of 5-[10-chloro-7-(1-ethylpropyl)-2,3,4,5-tetrahydro-1H-[1,3]diazepino[1,2-a]benzimidazol-1-yl]-N,N,4-trimethylpyridin-2-amine (43 mg, 0.10 mmol) in dichloromethane (2 mL) was added m-chloroperbenzoic acid (27 mg, 0.11 mmol) at 0° C. The mixture was warmed to room temperature and stirred for 2 hr. The reaction mixture was purified by flash chromatography on NH-silica gel eluting with a 0-20% methanol/ethyl acetate gradient mixture. The filtrate was concentrated in vacuo to give a solid, which was recrystallized from ethyl acetate/n-hexane to give the title compound (30 mg, 0.0678 mmol, 68%) as a colorless solid.

Provenance & Evidence