反应条件
1: 4-[2-(Piperidin-1-yl)ethoxy]benzoic acid hydrochloride With pyridine; thionyl chloride in dichloromethane 1 h; Heating / reflux; 2: 6-acetoxy-2-(4-acetoxyphenyl)benzo[b]thiophene in dichloromethane 3: With hydrogenchloride; sodium hydroxide; water; AlCl3, aluminium chloride more than 3 stages;