Acetic Anhydride → HCID 86620142, compound

Participants

Reaction Steps

Triethylamine (1.29 mL, 9.25 mmol) was added to a solution of tert-butyl [(3R,6S)-2-cyano-6-(2,3-difluorophenyl)azepan-3-yl]carbamate (0.65 g, 1.85 mmol) in dichloromethane (20 mL) at 0° C. Acetic anhydride (0.53 mL, 5.55 mmol) was added and the mixture was allowed to warm to ambient temperature. After 16 h, saturated aqueous sodium bicarbonate was added and the mixture was extracted with dichloromethane (3×). The combined organic extracts were dried over sodium sulfate, filtered, and concentrated. Purification by silica gel chromatography (99% dichloromethane/ethyl acetate→70% dichloromethane/ethyl acetate) gave the title compound (144 mg). MS 394.1 (M+1).

Provenance & Evidence