Cycloaddition Reactions of Alkene Radical Cations using Iron(III)‐Phenanthroline Complex

Abstract

Abstract Single electron oxidation of electron‐rich alkenes using the iron(III)‐phenanthroline complex produced electrophilic alkene radical cations, which promoted efficient radical cation [2+1] cycloaddition reactions with diazo compounds. Subsequent chain propagation afforded tri‐ and tetra‐substituted cyclopropanes. This methodology was also expanded to [3+2] cycloaddition reactions with vinyl diazoesters, validating this sustainable, first‐row transition metal iron system for the single electron redox reactions. magnified image