反应详情

温度

80 °C

To a solution of methyl 3-bromo-4-hydroxybenzoate (15.0 g, 64.9 mmol), 2-bromopropane (7.68 mL, 77.9 mmol) and potassium iodide (1.0 g, 6.49 mmol) in N,N-dimethylformamide (200 mL) was added potassium carbonate (13.5 g, 97.4 mmol), and the mixture was stirred at 80° C. for 2 hr. The reaction mixture was concentrated under reduced pressure, brine was added to the obtained residue, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel chromatography (hexane-hexane/ethyl acetate=9/1) to give the title compound (14.6 g, yield 83%) as a colorless oil.

1. concentrationThe reaction mixture was concentrated under reduced pressure, brine
2. additionwas added to the obtained residue
3. extractionthe mixture was extracted with ethyl acetate
4. dry with materialThe extract was dried over anhydrous sodium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by silica gel chromatography (hexane-hexane/ethyl acetate=9/1)