Tetrahedron letters

Base-free oxidative homocoupling of arylboronic esters

H Yoshida, Y Yamaryo, J Ohshita, A Kunai

Index: Yoshida, Hiroto; Yamaryo, Yasuhito; Ohshita, Joji; Kunai, Atsutaka Tetrahedron Letters, 2003 , vol. 44, # 8 p. 1541 - 1544

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Citation Number: 112

Abstract

Base-free oxidative homocoupling reaction of arylboronic esters has been found to proceed using a catalytic amount of a palladium–1, 3-bis (diphenylphosphino) propane (DPPP) complex under an oxygen atmosphere, affording a variety of biaryls in modest to excellent yields. Even arylboronic esters bearing a base-sensitive functional group are applicable to the reaction.