Iminophosphorane-mediated bispyrido annulation onto five-membered rings. X-ray crystal structure of 6,7-dibenzylamino-13-methoxymethyl-13H-diquino[4,3-b:3',4'-d]pyrrole. Acetonitrile complex

Article abstract of DOI:10.1016/0040-4020(95)00768-4

Bispyrido annulation reaction onto a preformed five-membered heterocycle is achieved by the tandem aza Wittig-electrocyclic ring closure methodology. The method allows the one-step formation of diquinopyrroles, dipyridopyrroles, furodipyridines and thienodipyridines. The crystal and molecular structure of the 6,7-dibenzylamino-13-methoxymethyl-13H-diquino[4,3-b:3',4'-d]pyrrole acetonitrile complex has been solved by X-ray analysis.