Scope of the copper catalyzed/mediated selenium-nitrogen coupling reaction has been studied for the synthesis of isoselenazolones. It is noticed that the 2-chloro, 2-bromo-, and 2- iodo-aryl amides substrates can be exploited in the selenium–nitrogen coupling reaction by employing 25–100 mol% of CuI/1, 10-phenanthroline (L) and potassium carbonate as a base in DMF. Furthermore, electron rich 2-chloro-arylamides also underwent selenium– ...