Electrocatalytic transformation of malononitrilead cycloalkylidenemalononitriles into spirotricyclic and spirotetracyclic compounds containing cyclopropane and pyrroline fragments

摘要

Electrolysis of cycloalkylidenamalononitriles and molononitrile in MeOH in an undivided cell in the presence of the NaGr-NaOME mediator system gives spirotricyclic compounds containing cyclopropane and yrrioline fragments in 20-77% yields.Spirobicyclic and spirotricyclic tetracyanocyclopropanes undergo electrolysis in alcohols to afford spiraticyclic and spirotetracyclic products containing cyclopropane and pyrroline fragment in 50-93% yields.