Acetic Anhydride → HCID 66868541, compound

Participants

Reaction Steps

Add 6-phenylethynyl-1-(1-(R)-methyl-2,2-dimethylpropyl)-1H-benzimidazol-2-ylamine (5.81 g, 0.018 mol), triethylamine (12 mL), dichloromethane (100 mL), N,N-dimethylaminopyridine (0.11 g, 0.9 mmol), and acetic anhydride (7.5 mL) and stir for about 18 hours. Evaporate and redissolve in ethyl acetate and wash with water, 1N HCl (3×), saturated sodium bicarbonate, and saturated sodium chloride. Add 2M ammonia in methanol to organic layer and stir 10 minutes and evaporate. Redissolve in dichloromethane and wash with saturated sodium bicarbonate, saturated sodium chloride, dry magnesium sulfate, and concentrate to give the desired compound as an orange foam (6.92 g, quant).

Provenance & Evidence