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温度

0 °C

To a stirred solution of 3-bromo-5-hydroxybenzoic acid (2 g, 9.22 mmol) in dimethyl formamide (50 mL), was added potassium carbonate (1.27 g, 9.21 mmol), and the mixture was stirred at 0° C. for 20 minutes. Benzyl bromide (1.1 mL, 9.25 mmol) was added, and the reaction mixture allowed to warm to room temperature over 16 hours. The reaction mixture was diluted with water and extracted with ethyl acetate (×3). The combined organic extracts were washed with brine, dried (magnesium sulphate), filtered, and concentrated under reduced pressure to afford the title compound (2.85 g, quantitative yield).

1. temperatureto warm to room temperature over 16 hours
2. extractionextracted with ethyl acetate (×3)
3. washThe combined organic extracts were washed with brine
4. dry with materialdried (magnesium sulphate)
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure