The cathodic, galvanostatic, diaphragm electrolysis of cyanamide in absolute CH3CN, with 0.1 NBu4NClO4 as a background electrolyte, in the presence of ,
(
)-dibromoalkanes, was shown to result in theformation of the cyanamide cyclic derivatives. The target process proceeds via a stage of cathodic generationof N-centered anions, which then enter the nucleophilic substitution reactions.