Cu(ii)-catalyzed [4 + 1] and [4 + 3] annulation reactions: a modular approach to N-aryl/alkyl substituted 2,5-diamidopyrroles and diazepines

A general strategy for the synthesis of 2,5-diamido-substituted N -arylpyrroles and structurally unique heterocycle-fused 1,3-diazepines using a Cu( ii ) catalyst has been showcased.