反应详情

温度

85 °C

To a solution of 1-bromo-2-fluoro-4-methylbenzene (2.5 g, 13.3 mmol) in trifluoromethyl benzene (25 mL) was a mixture of NBS (2.35 g, 13.3 mmol) and AIBN (945 mg, 6.7 mmol) in five portions at 85° C. for 30 min. The mixture was stirred at 85° C. for 3 h. The insoluble was filtered off and the filtrate was evaporated to afford 1-bromo-4-(bromomethyl)-2-fluorobenzene (2.7 g, 77%) as light yellow oil, which was used directly for next step.

1. filtrationThe insoluble was filtered off
2. customthe filtrate was evaporated