Electrochemical Cyclopropanation of Alkenes Using Dibromomethane and Zinc in CH2Cl2/DMF Mixture

Article abstract of DOI:10.1021/jo00010a015

An efficient electrosynthesis of cyclopropanes from gem-dibromoalkanes and alkenes is achieved in a one-compartment cell fitted with a sacrificial zinc anode.The part played by the anodically generated Zn(II) in the coupling reaction is pointed out, and evidence for the existence of an organozinc species as intermediate is presented.