Acetic Anhydride → HCID 57786245, compound

Participants

Reaction Steps

To a mixture of 1-(2,4-dichlorophenyl)-N7,N7-diethyl-2,3,4,5-tetrahydro-1H-[1,3]diazepino[1,2-a]benzimidazole-4,7-diamine (59.5 mg, 0.142 mmol) and triethylamine (0.0396 mL, 0.284 mmol) in tetrahydrofuran (1.4 mL) was added acetic anhydride (0.161 mL, 0.170 mmol) at 0° C. After the resultant mixture was stirred at 0° C. for 1 hr, aqueous sodium bicarbonate was added and the mixture was concentrated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with a 50-100% ethyl acetate/n-hexane gradient mixture to give a solid, which was recrystallized from ethyl acetate to afford the title compound as a colorless solid (27.1 mg, 0.0589 mmol, 41%).

Provenance & Evidence