Tetrahedron

Preparation of unsymmetrical terphenyls via the nickel-catalyzed cross-coupling of alkyl biphenylsulfonates with aryl Grignard reagents

CH Cho, IS Kim, K Park

Index: Cho, Chul-Hee; Kim, In-Sook; Park, Kwangyong Tetrahedron, 2004 , vol. 60, # 21 p. 4589 - 4599

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Citation Number: 34

Abstract

Unsymmetrical terphenyl derivatives were prepared by sequential transition metal-catalyzed cross-coupling reactions of neopentyl bromobenzenesulfonates with arylboronic acids and arylmagnesium bromides in good yields. Biphenylsulfonates undergo nickel-catalyzed coupling reactions more rapidly than the corresponding benzenesulfonates. The stepwise palladium-and nickel-catalyzed reaction of the bromobenzenesulfonates appears to be a ...