Synthesis of cyclopropane derivatives from electron-deficient olefins and dichloromethane via copper(I) catalysed photochemical addition followed by an electroreductive dehalogenation reaction
The CuCl-catalysed photochemical reaction of electron-deficient olefins with dichloromethane gave 1,3-dichloro compounds, which then afforded cyclopropane derivatives by electrochemical reduction.