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-radical cyclisation, intramolecular hydrosilylation, or intramolecular Diels–Alder reaction. Treatment of the ene precursors with methylaluminium
用于分子内烯反应的乙烯基硅烷前体可以通过适当的甲硅烷基卤的连续有机金属取代或通过2-丙烯基锂将氧杂硅烷基环戊烷开环而制得。草酸环戊烷中间体是通过自由基环化,分子内氢化硅烷化或分子内Diels-Alder反应制备的。用二氯化甲基铝处理烯前体导致形成具有高立体选择性的硅杂环己醇。