Tetrahedron

Triaryl phosphine-functionalized N-heterocyclic carbene ligands for Heck reaction

AE Wang, JH Xie, LX Wang, QL Zhou

文献索引：Wang, Ai-E; Xie, Jian-Hua; Wang, Li-Xin; Zhou, Qi-Lin Tetrahedron, 2005 , vol. 61, # 1 p. 259 - 266

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被引用次数: 90

摘要

A new type of triaryl phosphine-functionalized imidazolium salts were prepared. Their palladium complexes, generated in situ, were successfully applied in the palladium- catalyzed Heck reaction. Using 1mol% of Pd (dba) 2 and 1mol% in the presence of 2equiv of K2CO3 in DMAc has proven to be highly efficient for the coupling of a wide array of aryl bromides and iodides with acrylates in excellent yield. The coupling of 4-bromotoluene ...