5-bromo-6,7-dihydro-benzo[b]thiophene 、
叔丁基锂 、
硼酸三异丙酯 、
盐酸 在
SiO2 作用下,
以
methanol-dichloromethane 为溶剂,
以The title compound was obtained as a white crystalline material after chromatography (SiO2 with CH2Cl2-MeOH=98:2)的产率得到6,7-dihydro-benzo[b]thiophene-5-boronic acid