Abstract: Although Me3SiCH2SiMe20Me undergoes thermally induced@-elimination of Me, SiOMe to afford dimethylsilene, the thermodynamically favorable elimination of Me3SiOMe from Me3SiSiMe2CH20Me does not occur. From kinetic studies and trapping experiments, this is found to be due to a more favorable A-factor for three-centered elimination of: CH2. Three-centered elimination of Me3SiOMe from an sp2-hybridized carbon to afford a ...
