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.
by coupling the electrogeneratedalkylradicals with electron deficient (hetero)arenes in an undivided cell. Simultaneous cathodic reduction of both unactivated alkylhalides and cyanobenzenes under high potential enables radical–radical cross-coupling to deliver alkylarenes in the absence of transition metals. Depending on the coupling partner, the electrogeneratedalkylradicals can also proceed
Bil'kis; Panteleeva; Tananakin, Russian Journal of Organic Chemistry, 1997, vol. 33, # 5, p. 652 - 659
作者:Bil'kis、Panteleeva、Tananakin、Shteingarts
DOI:——
日期:——
Ruthenium-Catalyzed Para-Selective Oxidative Cross-Coupling of Arenes and Cycloalkanes
作者:Xiangyu Guo、Chao-Jun Li
DOI:10.1021/ol202081c
日期:2011.10.7
A novel, direct para-selective oxidativecross-coupling of benzene derivatives with cycloalkanes catalyzed by ruthenium was developed. A wide range of arenes bearing electron-withdrawing substituents was functionalized directly with simple cycloalkanes with high para-selectivity; arenes with electron-donating groups were mainly para-functionalized. Benzoic acid can be used directly.