An efficient approach to the synthesis of 3-vinylidene tetrahydropyrans via Prins-type cyclization
作者:Magdalena Dziedzic、Grzegorz Lipner、Bartłomiej Furman
DOI:10.1016/j.tetlet.2005.08.014
日期:2005.10
acid-catalyzed intramolecular reactions of oxocarbenium ions with propargylsilanes are described. The results obtained indicate that trimethylsilyl trifluoromethanesulfonate (TMSOTf) efficiently catalyses cyclization leading to the corresponding 3-vinylidene tetrahydropyrans in high yield as single isomers.
描述了路易斯酸催化氧碳鎓离子与炔丙基硅烷的分子内反应。所得结果表明,三甲基甲硅烷基三氟甲磺酸盐(TMSOTf)有效催化环化反应,从而以单一收率高产率地产生相应的3-亚乙烯基四氢吡喃。