Constructing Multiply Substituted Arenes Using Sequential Palladium(II)-Catalyzed CH Olefination
作者:Keary M. Engle、Dong-Hui Wang、Jin-Quan Yu
DOI:10.1002/anie.201002077
日期:2010.8.16
in which the reactivity/selectivity balance in PdII‐catalyzed ortho‐CHolefination can be modulated to enable sequential CH functionalization for the rapid preparation of 1,2,3‐trisubstituted arenes 1. Additionally, a rare example of iterative CH activation, in which a newly installed functional group directs subsequent CH activation has been demonstrated (2).
平衡行为:描述了互补的催化系统,其中可以调节Pd II催化的邻位-C - H烯化反应中的反应性/选择性平衡,以实现连续的 C - H 官能化,从而快速制备 1,2,3-三取代芳烃1 . 此外,还演示了一个罕见的迭代 C → H 激活示例,其中新安装的功能组指导后续的 C → H 激活 ( 2 )。