Successive treatments of alkenyldialkylboranes, formed by the reaction of alkynes and sterically hindered dialkylboranes, with alkyllithium and benzenesulfenyl chloride afforded highly pure (E)-alkenes in good or excellent yields.
由
炔烃和位阻二烷基
硼烷与烷基
锂和
苯磺酰氯反应形成的烯基二烷基
硼烷的连续处理以良好或优异的产率提供了高纯度(E)-烯烃。