反应详情

To a solution of 4-Bromo-2-fluorobenzaldehyde (5.1 g) in tetrahydrofuran (50 mL) was added 1M tetrahydrofuran solution of ethylmagnesium bromide (41 mL) at 0° C., and then the reaction mixture was stirred at room temperature for 1 hour. To the reaction mixture was added a saturated aqueous solution of ammonium chloride under ice-cooling, and the reaction mixture was extracted with ethyl acetate. The obtained organic layer was dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give the titled compound (3.78 g) as a colorless liquid.

1. temperaturecooling
2. extractionthe reaction mixture was extracted with ethyl acetate
3. dry with materialThe obtained organic layer was dried over anhydrous sodium sulfate
4. filtrationfiltered
5. concentrationthe filtrate was concentrated under reduced pressure
6. customThe obtained residue was purified by silica gel column chromatography