反应详情

温度

50 °C

To a mixture of 3,5-difluoro-4-hydroxybenzaldehyde (6) (8.26 g, 52.2 mmol), and potassium carbonate (14.4 g, 104.4 mmol) in dimethylformamide (100 mL) was added benzyl chloride (7.2 mL, 62.7 mmol) and stirred overnight at 50° C. The reaction was diluted with water and extracted with ethyl acetate (3×75 mL). The organic layer was dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel (0-100% EtOAc in hexanes) to afford 4-(benzyloxy)-3,5-difluorobenzaldehyde (7).

1. extractionextracted with ethyl acetate (3×75 mL)
2. dry with materialThe organic layer was dried over sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated in vacuo
5. customThe residue was purified by flash column chromatography on silica gel (0-100% EtOAc in hexanes)