β-Acylvinyl intermolecular radical additions to double bonds: Stereoselective synthesis of functionalised (E)-α,β-unsaturated carboxylic acids
作者:Francisco Foubelo、Francisco Lloret、Miguel Yus
DOI:10.1016/s0040-4020(01)89700-3
日期:——
leads, after treatment with aqueous sodium fluoride, to the expected functionalized (E)-α,β-unsaturated carboxylic acids 3 in a stereoselective manner. The probable reaction mechanism involves free radical intermediates.
在催化量的AIBN存在下,(Z)-3-碘丙烯酸(1)与亚化学计量的三丁基氯化锡(摩尔比为1:5)和过量的硼氢化钠(摩尔比为1:4)反应(摩尔比为1:0.18)和乙醇中过量的亲电子烯烃(2),在用氟化钠水溶液处理后,以立体选择的方式导致预期的官能化的(E)-α,β-不饱和羧酸3。可能的反应机理涉及自由基中间体。