Iridium-Catalyzed Branch-Selective and Enantioselective Hydroalkenylation of α-Olefins through C–H Cleavage of Enamides
作者:Xin Sun、En-Ze Lin、Bi-Jie Li
DOI:10.1021/jacs.2c07477
日期:2022.9.28
transformation in asymmetric catalysis. Herein we report an iridium-catalyzed asymmetric hydroalkenylation of α-olefins through directed C–H cleavage of enamides. This atom-economical addition process is highly branch-selective and enantioselective, delivering trisubstituted alkenes with an allylic stereocenter. DFT calculations reveal the origin of regio- and enantioselectivity.
原料α-烯烃的催化分支选择性加氢官能化形成对映体富集的手性化合物是不对称催化中特别有吸引力但具有挑战性的转化。在此,我们报道了通过烯酰胺的定向 C-H 裂解,铱催化的 α-烯烃不对称加氢烯基化。这种原子经济的加成过程具有高度的分支选择性和对映选择性,可提供具有烯丙基立体中心的三取代烯烃。DFT 计算揭示了区域选择性和对映选择性的起源。