Rhodium(III)‐Catalyzed Atroposelective Synthesis of Biaryls by C−H Activation and Intermolecular Coupling with Sterically Hindered Alkynes
作者:Fen Wang、Zisong Qi、Yuxia Zhao、Shuailei Zhai、Guangfan Zheng、Ruijie Mi、Zhiyan Huang、Xiaolin Zhu、Xiaoming He、Xingwei Li
DOI:10.1002/anie.202002208
日期:2020.8.3
the alkyne in redox‐neutral annulation with benzamides, with alkyne insertion being stereodetermining. The reaction accommodates both benzamides and heteroaryl carboxamides and proceeds in excellent regioselectivity (if applicable) and enantioselectivities (average 91.8 % ee ). An enantiomerically and diastereomerically pure rhodacyclic complex was prepared and offers insight into enantiomeric control
本文报道的是二芳基NH的atroposelective合成异喹诺酮由铑III催化的苯甲酰胺的C-H活化和分子间[4 + 2]环为2-取代的1- alkynylnaphthalenes范围广阔,以及空间位阻,对称diarylacetylenes。轴向手性是基于炔在氧化还原中性与苯甲酰胺的动力学动力学转化基础上构造的,炔的插入是立体确定的。该反应同时包含苯甲酰胺和杂芳基羧酰胺,并具有出色的区域选择性(如适用)和对映选择性(平均ee为91.8%))。制备了对映体和非对映体纯的rhodocyclic复合物,可以深入了解偶联系统的对映体控制,其中酰胺导向基团与炔烃底物之间的空间相互作用决定了区域和对映体的选择性。