Intramolecular Ene Reaction of Epoxyallylsilanes: Synthesis of Allyl- and Vinylsilane-Functionalized Cyclohexanols
作者:Asunción Barbero、Pilar Castreño、Gloria Fernández、Francisco J. Pulido
DOI:10.1021/jo051868g
日期:2005.12.1
Lewis acids. Two pathways for the carbonylenereaction are observed: one leading to allylsilane−cyclohexanols when the epoxyallylsilane (28−31) is nonsubstituted, 2-, or 4-monosubstituted and other leading to vinylsilane−cyclohexanols when the epoxyallylsilane (24−27) is 2,4-disubstituted or trisubstituted. An explanation for the observed regio- and stereoselectivity is advanced and a reliable mechanism