作者:Peña, Laura F.、Barbero, Asunción
DOI:10.1021/acs.orglett.4c01806
日期:——
very efficient methodology for the preparation of polysubstituted tetrahydropyrans, in which three new stereogenic centers have been created in a single pot. The reaction is general for a wide variety of aldehydes (alkylic, vinylic, aromatic, or dialdehydes), different types of alcohols, and halogenation agents providing high yields and excellent diastereoselectivity 2,3,4,6-tetrasubstituted tetrahydropyranyl
在这项研究中,据报道,在 Prins 环化中使用末端环丙基硅醇是一种非常有效的制备多取代四氢吡喃的方法,其中在一个锅中创建了三个新的立体中心。该反应适用于多种醛(烷基醛、乙烯基醛、芳香族醛或二醛)、不同类型的醇和卤化剂,可提供高产率和优异的非对映选择性 2,3,4,6-四取代四氢吡喃基骨架。有趣的是,非对映醇提供相同的四氢吡喃基衍生物,表明反应机制通过常见的中间体进行。