反应详情

温度

70 °C

Sodium hydride (3.85 g, 167 mmol) (freshly washed with hexane) was added to a solution of compound 226 (12.95 g, 41.9 mmol) in benzene (150 mL). The reaction was stirred at 70° C. After 1 h, the reaction contents were poured into water (300 mL) and extracted with ethyl acetate (2×100 mL). The combined organics were washed with brine, dried over MgSO4, and concentrated in vacuo. Silica gel chromatography (gradient elution 0 to 50% ethyl acetate in hexanes) afforded compound 227 (4.24 g, 34.8% yield).

1. customthe reaction contents
2. extractionextracted with ethyl acetate (2×100 mL)
3. washThe combined organics were washed with brine
4. dry with materialdried over MgSO4
5. concentrationconcentrated in vacuo
6. washSilica gel chromatography (gradient elution 0 to 50% ethyl acetate in hexanes)