Asymmetric Synthesis of Borylalkanes via Copper-Catalyzed Enantioselective Hydroallylation
作者:Jung Tae Han、Won Jun Jang、Namhyeon Kim、Jaesook Yun
DOI:10.1021/jacs.6b11229
日期:2016.11.23
through a copper-catalyzed regio- and enantioselective hydroallylation of alkenyl boronates and boramides employing hydrosilanes and allylic phosphates. In the presence of a copper catalyst with a chiral Walphos ligand, a range of alkenylboron compounds with an aryl, heteroaryl, or alkyl substituent produced secondary homoallylic alkylboron compounds in good yields and with high enantioselectivities up to
通过使用氢硅烷和烯丙基磷酸酯对烯基硼酸酯和硼酰胺进行铜催化的区域和对映选择性水解烯丙基化反应,实现了一种制备富含对映体的仲硼烷烃的有效合成方法。在具有手性 Walphos 配体的铜催化剂存在下,一系列具有芳基、杂芳基或烷基取代基的链烯基硼化合物以良好的收率和高达 99% ee 的高对映选择性生成二级均烯丙基烷基硼化合物。在 (S)-massoialactone 的有效合成中证明了所得烷基硼酸酯的效用。