Sh. Kim et al., CONVERSION OF VINYL SULFONES TO REGIOSPECIFICALLY FUNCTIONALIZED TRISUBSTITUTED OLEFINS, Tetrahedron letters, 36(23), 1995, pp. 4013-4014
Conjugate-addition of phenyldimethylsilyllilthium (or cuprate) to viny
l sulfones followed by in situ alkylation of the alpha-sulfonyl anion
provides alpha-alkylated beta-silyl sulfones. Treatment of these mater
ials with fluoride provides trisubstituted olefins via the Kocienski o
lefin synthesis.