The reaction of (2-mercaptophenyl)methyltriphenylphosphonium bromide (2) with acyl chlorides or α-haloketones in the presence of a base gives rise to 2-substituted 1-benzothiophenes 4 and 3-substituted 2H-1-benzothiopyrans 6 (2H-1-benzothiines), respectively, in moderate to good yields.
(2-巯基苯)甲基
三苯基膦溴化物(2)与酰
氯或α-卤酮在碱的存在下反应,分别生成2-取代的1-苯并
硫菲4和3-取代的2H-1-苯并
硫吡喃6(2H-1-苯并
硫烯),产率中等到良好。