Silicon Tethered Alkenyl Transfer and Type I Ene Reactions
作者:Jeremy Robertson、Garry O'Connor、Caroline L. Ringrose、Donald S. Middleton
DOI:10.1016/s0040-4020(00)00738-9
日期:2000.10
effecting silicon tethered Type I ene cyclisations analogous to our previously reported Type II variant. Some of these substrates were found to undergo overall stereospecific alkenyl transfer via silacyclopentanol intermediates; in a homologous series, alkenyl transfer was accompanied by dehydration to provide 7-silylhepta-2,4-dienes in moderate yield. Formal Type I ene cyclisations were found to be