A tandem aza-Wittig reaction of ethyl 3-triphenylphosphoranylideneamino-4- cyano-1-phenyl-1H-pyrrole-2-carboxylate with 4-chlorophenyl isocyanate and diisobutylamine produced the title compound, C27H28ClN5O. In the molecule, the angles between the fused-ring system and the two benzene rings are 51.66 (2) and 65.79 (2)degrees. Intramolecular C-H center dot center dot center dot N hydrogen bonds determine the conformation of the molecule. The packing of the molecules in the crystal structure is governed mainly by intermolecular C-H center dot center dot center...
