反应详情

Heat a mixture of 2-fluoro-5-methyl-benzoic acid (1.0 g, 6.48 mmol), iodomethane (1.38 g, 9.73 mmol), and potassium carbonate (2.68 g, 19.44 mmol) in acetone (20 mL) at reflux overnight. Cool the reaction and filter through Celite®. Concentrate the filtrate under reduced pressure to provide the title compound as a colorless gum (0.895 g, 82%). 1H NMR (CDCl3, 300 MHz) δ 2.32 (s, 3H), 3.89 (s, 3H), 6.95-7.10 (m, 1H), 7.20-7.30 (m 1H), 7.75-7.80 (m, 1H); TLC Rf=0.45 (2:1 Hexanes/Ethyl Acetate).

1. temperatureHeat
2. temperatureat reflux overnight
3. temperatureCool
4. customthe reaction
5. filtrationfilter through Celite®
6. concentrationConcentrate the filtrate under reduced pressure