Tetrahedron letters

Stereoselective cyclic carbolithiation of alkyne derivatives. A stereoselective synthesis of exocyclic alkenes

G Wu, FE Cederbaum, E Negishi

Index: Wu, Guangzhong; Cederbaum, Fredrick E.; Negishi, Ei-ichi Tetrahedron Letters, 1990 , vol. 31, # 4 p. 493 - 496

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Citation Number: 51

Abstract

Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... (Trimethylsilyl)alkyne derivatives that are lithiated in the δ position via non-radical routes can cyclize in a stereoselective manner (≥96-98%) to give exocyclic alkenes containing five-membered carbocycles in high yields. ... Lithiation in the δ position of (trimethylsilyl)alkyne ...

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