Catalytic Palladium Phosphination: Modular Synthesis of C1??Symmetric Biaryl??Based Diphosphines

L Bonnafoux, R Gramage??Doria…

Index: Bonnafoux, Laurence; Gramage-Doria, Rafael; Colobert, Francoise; Leroux, Frederic R. Chemistry - A European Journal, 2011 , vol. 17, # 39 p. 11008 - 11016

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Citation Number: 22

Abstract

Abstract A new family of C 1-symmetric bis (diphenylphosphino) biphenyls have been prepared starting from readily available ortho, ortho′-dihalobiphenyl precursors by a palladium-catalyzed C–P coupling reaction. This process does not require the use of an additional ligand. To date, the synthesis of such diphosphines, by reaction of an intermediate biphenyldiyl dianion with ClPPh 2, mainly afforded the undesired cyclic ...

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