Transmetalation as a route to novel styryllithium reagents.
[structure: see text] Transmetalation of beta-tributyl(styryl)stannanes with n-BuLi gives the functional equivalents of the corresponding styryllithium intermediates. Reaction of the intermediates with chlorotrimethylsilane, iodomethane, or dimethyl sulfate gives the substituted styryl products in moderate to good yields. In all cases, the configuration about the double bond was retained in the products.
Rim
Chinwon
C
Department of Chemistry, Southern Methodist University, P.O. Box 750314, Dallas, Texas 75275-0314, USA.
Son
David Y
DY