反应详情

温度

65 °C

To a solution of 55 (0.15 g; 0.42 mmol) in N,N-dimethylformamide (2 mL) at room temperature was added potassium carbonate (0.282 g; 2.12 mmol) followed by iodomethane (0.053 mL; 0.85 mmol). The reaction mixture was heated at 65° C. for 12 hours, cooled to room temperature, diluted with aqueous hydrochloric acid (50 mL; 2M) and extracted with dichloromethane (3×25 mL). The combined organic extracts were dried over magnesium sulfate, filtered, and concentrated under reduced pressure to yield a crude residue that was purified by chromatography on silica gel eluting with a 0 to 10% ethyl acetate/hexanes gradient to give the title product (0.129 g).

1. temperaturecooled to room temperature
2. extractionextracted with dichloromethane (3×25 mL)
3. dry with materialThe combined organic extracts were dried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customto yield a crude residue that
7. customwas purified by chromatography on silica gel eluting with a 0 to 10% ethyl acetate/hexanes gradient