In continuation of our previous study on the intramolecular reductive coupling of simple homoallylic esters promoted by allylSmBr/HMPA/H2O, which afforded a facile synthesis of 2-(2-hydroxyalkyl)cyclopropanols, here we report the reductive cascade cyclization of but-3-enyl but-3-enoates mediated by allylSmBr/HMPA/CuCl2·2H2O, in which the two C═C bonds were successively coupled to allow the construction
在我们先前关于烯丙基SmBr / HMPA / H 2 O促进的简单均烯丙基酯的分子内还原偶联的研究的延续中,该化合物提供了2-(2-羟烷基)
环丙醇的简便合成,在这里我们报告了丁-的还原级联环化由烯丙基SmBr / HMPA / CuCl 2 ·2H 2 O介导的3-烯基丁-3-烯酸酯,其中两个C═C键先后偶联,以构建结构上令人关注的桥联双环叔醇。因此,以中等至良好的产率和优异的非对映选择性制备了2-(2-羟乙基)双环[2.1.1]己-1-醇。