Fused bicyclic vinylcyclopropanes from intramolecular alkylidene carbene-alkene additions

Article abstract of DOI:10.1016/S0040-4039(98)00956-3

A double bond migration driven by the high strain energy of endocyclic methylenecyclopropane-containing fused bicyclic systems is proposed to explain the formation of azabicyclo[3.1.0]hexanes from the intramolecular addition of alkylidene carbenes to alke