Water → 2-(3,3-Difluoroazetidin-1-yl)-5-nitropyridine

関与物質

反応条件

反応手順

A mixture of 0.367 g (2.84 mmol) of 3,3-difluoroazetidine hydrochloride, 0.3 g (1.89 mmol) of 2-chloro-5-nitropyridine and 0.41 mL (2.84 mmol) of triethylamine in 10 mL of dimethylformamide is heated overnight at 100° C. After this time, the suspension is poured into a mixture of 30 mL of water and 30 mL of ethyl acetate. The aqueous phase is separated, and then extracted with 20 mL of ethyl acetate. The organic phases are combined, washed three times with 25 mL of water, then dried over sodium sulfate and concentrated at reduced pressure. The resultant product is purified by chromatography on a silica column, eluting with dichloromethane. We thus obtain 0.34 g of the expected product in the form of a yellow solid.

情報源と証拠