Stereoselective Synthesis of Silacyclohexanols by Silicon Tethered Type II Ene Cyclisation
作者:Jeremy Robertson、Garry O'Connor、Tsarina Sardharwala、Donald S. Middleton
DOI:10.1016/s0040-4020(00)00737-7
日期:2000.10
silane precursors for intramolecular ene reaction were prepared either by sequential organometallic substitution of appropriate silyl halides or by ring opening of oxasilacyclopentanes with 2-propenyllithium. The oxasilacyclopentane intermediates were prepared by free-radicalcyclisation, intramolecular hydrosilylation, or intramolecular Diels–Alder reaction. Treatment of the ene precursors with methylaluminium
An intramolecular Diels-Alder reaction of vinylsilanes
作者:Scott M. Sieburth、Louis Fensterbank
DOI:10.1021/jo00046a002
日期:1992.9
Dialkylvinylsilyl ethers of dienols undergo a smooth intramolecular Diels-Alder reaction to Yield a versatile bicyclic product with an endo-exo selectivity influenced by the substituents on silicon.