Organocatalytic Asymmetric Synthesis of 1,1-Diarylethanes by Transfer Hydrogenation
作者:Zhaobin Wang、Fujin Ai、Zheng Wang、Wanxiang Zhao、Guangyu Zhu、Zhenyang Lin、Jianwei Sun
DOI:10.1021/ja510980d
日期:2015.1.14
organocatalytic transfer hydrogenation strategy for the asymmetric synthesis of 1,1-diarylethanes is described. Under mild conditions, a range of 1,1-diarylethanes substituted with an o-hydroxyphenyl or indole unit could be obtained with excellent efficiency and enantioselectivity. We also extended the protocol to an unprecedented asymmetric hydroarylation of 1,1-diarylalkenes with indoles for the synthesis of
描述了一种新的有机催化转移氢化策略,用于不对称合成 1,1-二芳基乙烷。在温和条件下,可以以优异的效率和对映选择性获得一系列被邻羟基苯基或吲哚单元取代的 1,1-二芳基乙烷。我们还将该协议扩展到前所未有的 1,1-二芳基烯烃与吲哚的不对称氢化芳基化,以合成一系列高度对映体富集的 1,1,1-三芳基乙烷,这些化合物带有非环状全碳四元立体中心。这些二芳基乙烷和三芳基乙烷对许多人类癌细胞系表现出令人印象深刻的细胞毒性。结合 DFT 计算的初步机理研究提供了对反应机理的重要见解。