反应详情

To a solution of 1-fluoro-4-methoxy-2-methylbenzene (2.0 g, 14.29 mmol) in CCl4, NBS (2.55 g, 14.29 mmol) and PhCO3H (80 mg) were added. The reaction mixture was heated at reflux for 2 h, cooled to room temperature, and the solid was filtered off. The filtrate was concentrated, and the residue was purified by silica gel column chromatography (eluting with PE/EA=20/1) to give the target compound (3.0 g) as an oil. 1H NMR (CDCl3): δ 6.97-6.83 (m, 3H), 4.48 (s, 2H), 3.78 (s, 3H).

1. temperatureThe reaction mixture was heated
2. temperatureat reflux for 2 h
3. filtrationthe solid was filtered off
4. concentrationThe filtrate was concentrated
5. customthe residue was purified by silica gel column chromatography (eluting with PE/EA=20/1)