Transformations of ethoxycarbonyl-substituted but-3-enyl and cyclopropylmethyl radicals: characterisation by e.s.r. spectroscopy

Abstract

Ethoxycarbonyl-substituted but-3-enyl and cyclopropylmethyl radicals were generated from the corresponding halides by treatment with tributyltin and triethylsilyl radicals in cyclopropane solution; the radicals were characterised by e.s.r. spectroscopy and the rearrangement at –40 °C of the 3-ethoxycarbonylbut-1-enyl radical to the 1-ethoxycarbonylbut-1-enyl radical was demonstrated.