反应详情

To a solution (10 mL) of 2-chloro-4-fluoro-3-formylbenzonitrile (600 mg) in methanol was added sodium borohydride (136 mg) under ice-cooling, and the mixture was stirred at room temperature for 30 min. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was crystallized from hexane-isopropyl ether to give the title compound as a pale-yellow solid (yield: 410 mg).

1. temperaturecooling
2. extractionthe mixture was extracted with ethyl acetate
3. washThe extract was washed with saturated brine
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe residue was crystallized from hexane-isopropyl ether