Ir-Catalyzed Selective Hydroboration of 2-Substituted 1,3-Dienes: A General Method to Access Homoallylic Boronates
作者:Daniele Fiorito、Clément Mazet
DOI:10.1021/acscatal.8b02334
日期:2018.10.5
An operationally simple protocol for the 4,3-selective hydroboration of 2-substituted 1,3-dienes using an iridium catalyst is described. Independently of the nature (alkyl, aryl, heteroaryl) and the size of the substituent in the 2-position, it provides access to a variety of homoallylic boronates featuring a 1,1-disubstituted olefin in high yield and chemo- and regioselectivity. An array of potentially
描述了一种使用铱催化剂进行2-取代1,3-二烯4,3-选择性加氢硼化的操作简单方案。不依赖于性质(烷基,芳基,杂芳基)和2-位取代基的大小,它可以以高收率,化学选择性和区域选择性提供各种以1,1-二取代烯烃为特征的均硼酸硼酸酯。一系列潜在敏感的官能团具有良好的耐受性,该方法可以扩展到1,2-二取代的1,3-二烯。还使用当代的催化和对映选择性方法证明了均硼酸硼酸酯的衍生化。