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Report | Regular issue | Vol 19, No. 4, 1982, pp.681-686
Published online, 1st January, 1970
DOI: 10.3987/R-1982-04-0681
Polycondensed Nitrogen Heterocycles. Part XI. 1,3-Disubstituted 2-Methylpyrrolo[3,2-c]cinnoline and 2-Acetyl-3-methylpyrrolo[1,2-c]banzo[1,2,3]triazine

Gaetano Dattolo, Girolamo Cirrincione, Anna Maria Almerico, Isabella D’Asdia, and Enrico Aiello

*II Cattedra di Chimica Farmaceutica, Università digli Studi di Palermo, Via Archirafi 32, 90123 Palermo, Italy


The diazotization of 1,3-disubstituted 2-methyl-5-(2-aminophenyl)pyrroles (2) and the intramolecular coupling reaction of the resulting diazonium salts lead to pyrrolo[1,2-c]benzo[1,2,3]triazine 4 when R = H. Pyrrolo[3,2-c]cinnolines 3, a new ring system, were obtained when R ≠ H. Compound 3d inhibited the germination of seeds of Echinochloa crus-galli.