Palladium‐Catalyzed
<i>para</i>
‐Selective Alkylation of Electron‐Deficient Arenes
作者:Zhiwei Jiao、Li Hui Lim、Hajime Hirao、Jianrong Steve Zhou
DOI:10.1002/anie.201801967
日期:2018.5.22
Intermolecular alkylations of electron‐deficient arenes proceed with good para selectivity. Palladium catalysts were used to generate nucleophilic alkyl radicals from alkyl halides, which then directly add onto the arenes. The arene scope and the site of alkylation are opposite to those of classical Friedel–Crafts alkylations, which prefer electron‐rich systems.
电子不足的芳烃的分子间烷基化反应具有良好的对位选择性。钯催化剂用于从卤代烷生成亲核烷基,然后将其直接添加到芳烃上。芳烃的范围和烷基化的位置与经典的Friedel-Crafts烷基化相反,后者倾向于富电子系统。