Tetrahedron Letters

Palladium-bisimidazol-2-ylidene complexes as catalysts for general and efficient Suzuki cross-coupling reactions of aryl chlorides with arylboronic acids

C Zhang, ML Trudell

文献索引：Zhang, Chunming; Trudell, Mark L. Tetrahedron Letters, 2000 , vol. 41, # 5 p. 595 - 598

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被引用次数: 213

摘要

A series of bisimidazolium salts 1–6 were synthesized and evaluated as precursors to bisimidazol-2-ylidene ligands in palladium-catalyzed Suzuki cross-coupling reactions with aryl chlorides and arylboronic acids. The bisimidazolium salt 6 was found to be superior over imidazolium and other bisimidazolium salts affording high yields of biaryl products employing a wide variety of substrates.