Triethylamine → N-((6S,9R)-3-cyclopropyl-6-(2,3-difluorophenyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-9-yl)-4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine-1-carboxamide

Participants

Reaction Conditions

Reaction Steps

Triethylamine (20 μL, 0.142 mmol) was added to a solution of N-[(3R,6S)-6-(2,3-difluorophenyl)-2-hydrazonoazepan-3-yl]-4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine-1-carboxamide (59 mg, 0.118 mmol) and cyclopropanecarbonyl chloride (11 μL, 0.124 mmol) in dichloromethane (1 mL) and the mixture heated to 45° C. After 20 h, the reaction was concentrated. 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 [100% dichloromethane→95% dichloromethane/(10% ammonium hydroxide/methanol)] gave the title compound (57 mg). MS 549.2524 (M+1).

Provenance & Evidence