Journal of organometallic chemistry

In situ formation of alkenyl-and alkynylboranes for Diels—Alder reactions by boron—silicon exchange with alkenyl-and alkynylsilanes

DA Singleton, SW Leung

Index: Singleton, Daniel A.; Leung, Shun-Wang Journal of Organometallic Chemistry, 1997 , vol. 544, # 2 p. 157 - 161

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Citation Number: 22

Abstract

A variety of alkenylsilanes underwent transmetallation with BBr3 to afford the corresponding alkenyldibromoboranes in solution. Similarly, the transmetallation of alkynylsilanes with BCl3 afforded alkynyldichloroboranes. A number of the alkenyl-and alkynylboranes are novel and useful Diels—Alder dienophiles. An ionic mechanism for the transmetallation is proposed.