Exo-Selective Intramolecular C–H Alkylation with 1,1-Disubstituted Alkenes by Rare-Earth Catalysts: Construction of Indanes and Tetralins with an All-Carbon Quaternary Center
作者:Aniket Mishra、Ping Wu、Xuefeng Cong、Masayoshi Nishiura、Gen Luo、Zhaomin Hou
DOI:10.1021/acscatal.2c03681
日期:2022.10.21
We report herein the exo-selective, regiospecific annulation of a wide range of functionalized aromatic substrates with 1,1-disubstituted alkenes through C(sp2)–H and benzylic C(sp3)–H activation by half-sandwich rare-earth catalysts. This protocol offers a straightforward and atom-efficient route for the synthesis of a family of indane and tetralin derivatives bearing an all-carbon quaternary stereocenter
我们在此报告了通过 C(sp 2 )-H 和苄基 C(sp 3 )-H 半夹心稀土活化的多种功能化芳族底物与 1,1-二取代烯烃的外选择性、区域特异性环化催化剂。该协议为合成具有全碳四元立体中心的茚满和四氢化萘衍生物家族提供了一种直接且原子效率高的路线,这些化合物以前很难被其他催化剂获得。反应机理已通过氘标记实验和 DFT 计算阐明。