反应详情

温度

90 °C

To a solution of ethyl 4-(bromomethyl)-3-chloro-5-fluorobenzoate (531 mg, 1.797 mmol) in toluene (10 mL) was added PPh3 (471 mg, 1.797 mmol). The solution was refluxed at 90° C. overnight. Upon cooling a white precipitate formed. The mixture was diluted with hexanes, filtered and dried under vacuum to yield (2-chloro-4-(ethoxycarbonyl)-6-fluorobenzyl)triphenylphosphonium bromide (0.874 g, 86%) as a white solid. 1H NMR (400 MHz, DMSO-d6) δ 8.05-7.87 (m, 3H), 7.85-7.58 (m, 13H), 7.20 (tt, J=15.1, 7.1 Hz, 1H), 5.21 (d, J=15.0 Hz, 2H), 4.34 (dq, J=14.2, 7.1 Hz, 2H), 1.33 (dt, J=14.2, 7.1 Hz, 3H).

1. temperatureUpon cooling a white precipitate
2. customformed
3. filtrationfiltered
4. customdried under vacuum