Ir-Catalyzed Atroposelective Desymmetrization of Heterobiaryls: Hydroarylation of Vinyl Ethers and Bicycloalkenes
作者:Antonio Romero-Arenas、Valentín Hornillos、Javier Iglesias-Sigüenza、Rosario Fernández、Joaquín López-Serrano、Abel Ros、José M. Lassaletta
DOI:10.1021/jacs.9b12858
日期:2020.2.5
highly regio, diastereo- and enantioselective, scalable Ir-catalyzed hydroarylation of electron rich acyclic and tensioned cyclic olefins with heterobiaryls is described. The reaction of acyclic vinyl ethers, dihydrofuran and norbornenes with a variety of aryl isoquinoline, quinazo-line, and picoline derivatives takes place with simultaneous installation of central and axial chirality, reaching complete
描述了一种高度区域、非对映选择性和对映选择性、可扩展的 Ir 催化的富电子无环和张力环烯烃与杂二芳基的氢化芳基化。无环乙烯基醚、二氢呋喃和降冰片烯与各种芳基异喹啉、喹唑啉和甲基吡啶衍生物发生反应,同时安装中心和轴手性,达到完整的支链/线性或外/内比例以及优异的非对映和原位形成 [IrI/Tol-SDP] 或 [IrI/Tol-BINAP] 复合物时的对映体过量用作催化剂。动力学同位素效应 (KIE) 分析和综合计算研究表明,尽管双键迁移插入 Ir-H 中的速度很快,但该反应通过改进的 Chalk-Harrod 机制进行,从选择性决定插入 Ir-Caryl 开始。