反应详情

A suspension of potassium methoxide (4.24 g, 60.0 mmol) in tetrahydrofuran (40 mL) was added in portions to a solution of 4-Bromo-2-fluorobenzonitrile (8.0 g, 40.0 mmol) in tetrahydrofuran (50 mL) at −50° C. After one hour, the dry ice bath was removed and the reaction mixture was allowed to warm up to room temperature and stirred at room temperature for 6 hours. The reaction mixture was poured onto water (250 mL) and the solid was collected by filtration to give 4-bromo-2-methoxybenzonitrile (7.85 g, 92%). 1H NMR (DMSO-d6) δ 3.94 (s, 3H), 7.32 (d, J=8.23 Hz, 1H), 7.15 (s, 1H), 7.69 (d, J=8.23 Hz, 1H).

1. customthe dry ice bath was removed
2. additionThe reaction mixture was poured onto water (250 mL)
3. filtrationthe solid was collected by filtration