文献类型：期刊文献

英文题名：Cross-coupling of aryl iodides with malononitrile catalyzed by palladium N-heterocyclic carbene complex system

作者：Gao, CW; Tao, XC; Liu, TP; Huang, JL; Qian, YL

机构：[1]E China Univ Sci & Technol, Organomet Chem Lab, Shanghai 200237, Peoples R China

年份：2002

卷号：20

期号：9

起止页码：819

外文期刊名：CHINESE JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000177982600003)，CCR-EXPANDED(收录号:WOS:000177982600003)】；

语种：英文

外文关键词：palladium complex; N-heterocyclic carbene; imidazolium salt; cross-coupling; arylmalononitrile

摘要：Eight N-heterocyclic carbenes (NHC), generated in situ from thew 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%.