Electrochemical cyclopropanation of alkenes using dibromomethane and zinc in dichloromethane/DMF mixture
摘要:
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.