反应详情

温度

0 °C

3-Cyano-5-(trifluoromethoxy)benzoyl chloride (844 mg, 3.38 mmol) was dissolved in THF (10 mL) and cooled to 0° C. Sodium borohydride (320 mg, 8.45 mmol) was added, followed by methanol (2 mL) and the reaction was stirred for 20 min at 0° C. before it was allowed to warm to room temperature. After 2 h, the reaction mixture was acidified to pH 3 with 1.0 M HCl. The aqueous mixture was extracted with ethyl acetate and the combined extracts were dried over sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by silica gel column chromatography to give the title compound (440 mg). LCMS m/z=218.3 [M+H]+.

1. temperatureto warm to room temperature
2. waitAfter 2 h
3. extractionThe aqueous mixture was extracted with ethyl acetate
4. dry with materialthe combined extracts were dried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customThe residue was purified by silica gel column chromatography