Cross-Coupling of Aryl Iodides with Malononitrile Catalyzed by Palladium N-Heterocyclic Carbene Complex System

被引：0
|
作者：
高诚伟
陶晓春
刘涛平
黄吉玲
钱延龙
机构：
来源：
Chinese Journal of Chemistry | 2002年 / 09期
关键词：
palladium complex; N heterocyclic carbene; imidazolium salt; cross coupling; arylmalononitrile;
D O I：
暂无
中图分类号：
O625 [芳香族化合物];
学科分类号：
070303 ; 081704 ;
摘要：
Eight N heterocyclic carbenes (NHC), generated in situ from their imidazolium salts, as ligands of palladium complexes were used for the catalytic coupling of iodobenzene with malononitrile anion. It was found that 1,3 bis(2,4,6 trimethylphenyl) imidazolium chloride (IMesHCl) Pd 2(dba) 3 catalytic system has the highest activity to obtain phenyl malononitrile among the imidazolium salts. The substituted iodoarenes reacted with malononitrile anions by using the catalytic system to give cross coupling products in yields from 50% to 96%.
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页码：819 / 821 +807
页数：4
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