Kinetics and Mechanism of the Platinum(II)‐Catalyzed Hydroarylation of Vinyl Arenes with 1,2‐Dimethylindole
作者:Zhibin Zhang、Scott Liu、Ross A. Widenhoefer
DOI:10.1002/ijch.201900065
日期:2020.3
The mechanism of the intermolecular hydroarylation of vinyl arenes (1) with 1,2‐dimethylindole (2) catalyzed by PtCl2 has been evaluated through a combination of kinetic analysis, deuterium labeling studies, and stereochemical analysis. The results of these and additional experiments are consistent with a mechanism for hydroarylation involving rapid and reversible complexation of vinyl arene to the
通过动力学分析,氘标记研究和立体化学分析相结合,评估了PtCl 2催化乙烯基芳烃(1)与1,2-二甲基吲哚(2)分子间氢芳基化的机理。这些和其他实验的结果与涉及芳烃快速且可逆地络合到具有催化活性的铂单(乙烯基芳烃)络合物反式-PtCl 2(H 2 C = CHAr)(溶剂)的氢芳基化机理一致。活性铂双(乙烯基芳烃)络合物反-PtCl 2(H 2 C = CHAr)2,它受到吲哚的营业额限制,外圈攻击。所得铂烷基络合物的快速原金属脱金属释放产物并再生铂π-乙烯基芳烃络合物的平衡混合物。