Iodobenzene catalysed synthesis of spirofurans and benzopyrans by oxidative cyclisation of vinylogous esters
作者:Marsewi Ngatimin、Raphael Frey、Cecily Andrews、David W. Lupton、Oliver E. Hutt
DOI:10.1039/c1cc15015d
日期:——
Vinylogous esters bearing para or meta methoxy benzyl groups undergo oxidative cyclisation with 5-20 mol% iodobenzene and m-CPBA to give spirofuran or benzopyran containing heterocycles. The reaction allows rapid generation of skeletal complexity in good to excellent yields via a novel oxidative cyclisation.
带有对或间甲氧基苄基的乙烯基酯与5-20 mol%的碘苯和间-CPBA进行氧化环化反应,生成含有螺环呋喃或苯并吡喃的杂环。该反应允许通过新颖的氧化环化以良好或优异的产率快速产生骨骼复杂性。