反应详情

温度

50 °C

To a solution of ethyl bromodifluoroacetate (1.1 equiv.) and 2-bromopyridine (1 equiv.) in DMSO was added copper bronze (2.2 equiv.) and the mixture was heated to 50° C. with stirring for 2 hours. The reaction mixture was cooled to room temperature and diluted with ethyl acetate. A solution of potassium dihydrogen phosphate was added and the mixture stirred for 30 minutes before filtering. The copper salts were washed with ethyl acetate and the organic layer was washed with water. Solvent evaporation and purification by flash column chromatography on silica gel (diethyl ether-hexane) gave the title compound as a colorless oil in 82% yield.

1. temperatureThe reaction mixture was cooled to room temperature
2. stirringthe mixture stirred for 30 minutes
3. filtrationbefore filtering
4. washThe copper salts were washed with ethyl acetate
5. washthe organic layer was washed with water
6. customSolvent evaporation and purification by flash column chromatography on silica gel (diethyl ether-hexane)