反应详情

To a solution of 3-bromo-2,6-difluorobenzaldehyde (5 g) in tetrahydrofuran (50 ml) was added dropwise methylmagnesium bromide (1 M tetrahydrofuran solution, 24.9 ml) at 0° C., and the mixture was stirred for 30 min. The reaction mixture was added to water, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous ammonium chloride solution and saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate) to give the title compound (4.91 g).

1. extractionthe mixture was extracted with ethyl acetate
2. washThe organic layer was washed with saturated aqueous ammonium chloride solution and saturated brine
3. dry with materialdried over anhydrous magnesium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate)