Catalytic Reductive Cross Coupling and Enantioselective Protonation of Olefins to Construct Remote Stereocenters for Azaarenes
作者:Manman Kong、Yaqi Tan、Xiaowei Zhao、Baokun Qiao、Choon-Hong Tan、Shanshan Cao、Zhiyong Jiang
DOI:10.1021/jacs.1c01073
日期:2021.3.17
A novel enantioselective protonation protocol that is triggered by reductive cross coupling of olefins is reported. When under cooperative photoredox and chiral hydrogen-bonding catalytic conditions and using a terminal reductant, various α-branched vinylketones with diverse vinylazaarenes could provide important enantioenriched azaarene derivatives containing tertiary stereocenters at their remote
报道了一种由烯烃的还原交叉偶联触发的新型对映选择性质子化方案。当在协同光氧化还原和手性氢键催化条件下并使用末端还原剂时,具有不同乙烯基氮杂芳烃的各种α-支化乙烯基酮可以提供重要的对映体富集的氮杂芳烃衍生物,在其远端δ-位含有叔立体中心,具有高产率和对映选择性。该反应体系也适用于 α-支化的乙烯基氮杂芳烃,因此成功组装了难以捉摸的 1,4-立体中心。产物后期修饰方便,尤其是形成远程ε-叔碳和ε-杂四元碳立体中心,进一步凸显了该方法的重要合成价值。