Binaphthyl-bridged bis-imidazolinium salts as N-heterocyclic carbene ligand precursors in the palladium-catalyzed Heck reaction

…, C Jin, GL Huang, LJ Wang, JL Jiang, LY Wang

Index: Wu, Hui; Jin, Can; Huang, Guoli; Wang, Lianjun; Jiang, Juli; Wang, Leyong Science China Chemistry, 2011 , vol. 54, # 6 p. 951 - 956

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Citation Number: 2

Abstract

Abstract Two new bis-imidazolinium salts (4a, 4b) have been synthesized as precursors of N- heterocyclic carbenes (NHCs) from the commercially available (R)-2, 2′-dihydroxy-1, 1′- binaphthalene. The two bis-imidazolinium salts were used as efficient precursor of NHC ancillary ligands in the palladium-catalyzed Heck reaction. Good to excellent yields and high stereoselectivities were obtained with ethyl acrylate, acrylonitrile, and acrylamide as ...