Simple Preparation of (2, 2′-Biphenylylene) phenylphosphine Oxide and Role of Triphenylphosphine Oxide as a Mediator for Formation of Biaryl Derivatives

S Ogawa, Y Tajiri, N Furukawa

Index: Ogawa, Satoshi; Tajiri, Yoko; Furukawa, Naomichi Bulletin of the Chemical Society of Japan, 1991 , vol. 64, # 10 p. 3182 - 3184

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Citation Number: 15

Abstract

(2, 2′-Biphenylylene) phenylphosphine oxide (3) was prepared simply by the reaction of triphenylphosphine oxide (1) with phenyllithium and subsequently with aqueous hydrogen peroxide in acetic acid. The oxide 3 reacted with lithium diisopropylamide (LDA) and then with several electrophiles to afford regiospecifically ortho-substituted compounds in moderate yields, which were converted to unsymmetrical 2-and 2, 3′-substituted 1, 1′- ...

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