作者:Christine Destabel、Jeremy D Kilburn、John Knight
DOI:10.1016/s0040-4020(01)89429-1
日期:1994.1
Radical cyclisations of various methylenecyclopropane derivatives have been studied. Cyclisation of diphenylsubstituted (methylenecyclopropyl)butyl radical 10 gave the unexpected cyclohexene 5, via a series of radical rearrangements. In further studies, (methylenecyclopropyl) radicals underwent exclusive 5-exo cyclisation, while (methylenecyclopropyl)butyl radicals gave mixtures of products resulting
已经研究了各种亚甲基环丙烷衍生物的自由基环化。diphenylsubstituted(methylenecyclopropyl)的环化丁基自由基10,得到意想不到的环己烯5,经由一系列自由基重排。在进一步的研究中,对(亚甲基环丙基)自由基进行了专门的5- exo环化反应,而(亚甲基环丙基)丁基则给出了由6- exo和7-内环化反应生成的产物的混合物。在(亚甲基环丙基)-戊基自由基的尝试环化中未检测到环化产物。