A simple electrochemical synthesis of beta-lactams has been developed using constant current electrolysis in a suitable solvent-supporting electrolyte solutions, with subsequent addition of bromoamides. The regio- and stereo-selectivity of the electrochemically-induced cyclization of bromoamides to beta-lactams, via N-C4 bond formation, has been evidenced. This synthesis avoids any addition of bases and probases and gives beta-lactams in high yields. (C) 2004 Elsevier Ltd. All rights reserved.