Ring opening rections of vinyl cyclopropanes with para toluene sulphonyl iodide.
作者:Maria C.M. de C. Alpoim、Angela D. Morris、William B. Motherwell、Dennis M. O'Shea
DOI:10.1016/s0040-4039(00)80448-7
日期:1988.1
Substituted 1-iodo-5-para toluene sulphonyl pent-3-enes are readily prepared by regiospecific ring opening of vinyl cyclopropanes with para toluene sulphonyl iodide. Intramolecular carbanionic cyclisation of the cisoid isomers via α or γ alkylation is substrate dependent.
通过乙烯基环丙烷与对甲苯磺酰碘的区域特异性开环,可以容易地制备取代的1-碘-5-对甲苯磺酰戊-3-烯。通过α或γ烷基化的顺式异构体的分子内碳负离子环化取决于底物。