Tetrahedron

Pyrazole-tethered phosphine ligands for Pd (0): useful catalysts for Stille, Kumada and Hiyama cross-coupling reactions

A Pal, R Ghosh, NN Adarsh, A Sarkar

Index: Pal, Anwesha; Ghosh, Raju; Adarsh; Sarkar, Amitabha Tetrahedron, 2010 , vol. 66, # 29 p. 5451 - 5458

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Citation Number: 26

Abstract

Combination of 3, 5-dimethyl-1-(2-(diphenylphosphino) phenyl)-1H-pyrazole, A, and 3-tert- butyl-5-methyl-1-(2-(diphenylphosphino) phenyl)-1H-pyrazole, B, with Pd2 (dba) 3 furnished excellent catalysts for Stille, Kumada and Hiyama cross-coupling reactions. Effects of solvents, bases and ligand/palladium ratio on efficiency of coupling reactions were studied. Molecular structures of palladium (II) complexes of A and B determined by single-crystal X ...

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