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
制备了一系列乙烯基硅烷,以研究与我们先前报道的II型变体类似的影响硅系链的I型烯环化的可能性。发现其中一些底物通过硅环戊醇中间体进行了整体的立体有择链烯基转移。在同源系列中,烯基转移伴随着脱水,以中等收率提供了7-甲硅烷基庚二-2,4-二烯。发现形式I型烯环化对于烯丙基硅烷前体是成功的,从而导致了硅杂环己醇的立体选择性形成。