Synthesis and characterization of new N-substituted 2-aminopyrrole derivatives

In this work, new N-substituted 2-aminopyrrole derivatives were synthesized. Initially, some crotonitriles were prepared by condensation of malononitrile with arylmethylketones, which was followed by conversion of them to the bromocrotonitriles. Finally, the synthesis of new N-substituted 2-aminopyrrole derivates were successfully achieved by cyclization of the bromocrotonitriles of (R)-1-phenylethylamine applying Gewald method.