反应详情

To the solution of benzothiophene (0.05 mol) dissolved in dichloromethane (30 mL), AlCl3 (0.10 mol) is added batch by batch and 3-chloropropionyl chloride (0.055 mol) is added dropwise, while the internal temperature is maintained below 5° C. Following procedures described in General Method One—Method A, 3-chloro-1-(benzothiophen-3- yl)-acetone is obtained as a white solid (9.6 g). The yield is 85.3%. MS(m/z): 225.0 [M+1]+.

1. additionis added dropwise, while the internal temperature
2. temperatureis maintained below 5° C