Alkyl radical cyclisations of methylenecyclopropane derivatives
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