反应详情

温度

25 °C

Ethyl 2-(3-(cyclopropylmethoxy)-4-nitrophenyl)acetate (5 g, 17.9 mmol) was dissolved in 50 mL anhydrous DMF, NaH (60% wt. in oil, 1.43 g, 35.9 mmol) was added at 0° C. The reaction mixture was stirred for 0.5 h at 25° C. and 1,3-dibromopropane (1.91 mL, 17.9 mmol) was added drop wise at 0° C. The reaction mixture was stirred at 0° C. for 1 h and saturated NH4Cl solution (10 mL) was added. The reaction mixture was extracted with EtOAc (3×20 mL) and the combined organic phases were washed with water (3×20 mL) and brine (20 mL), dried over MgSO4, filtered and concentrated under reduced pressure to give ethyl 1-(3-(cyclopropylmethoxy)-4-nitrophenyl)cyclobutanecarboxylate (2.8 g) as a colorless oil.

1. stirringThe reaction mixture was stirred at 0° C. for 1 h
2. extractionThe reaction mixture was extracted with EtOAc (3×20 mL)
3. washthe combined organic phases were washed with water (3×20 mL) and brine (20 mL)
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure