ChemInform Abstract: Synthesis of 1,3-Diazapyrenes and 1,3,7-Triazapyrenes by the Reaction of 1,8-Naphthalenediamine with Triazine in the Presence of Carbonyl Compounds or Benzonitrile in Polyphosphoric Acid

A novel three-component synthesis has been developed for 1,3-diazapyrenes based on the reaction of 1,8-naphthalenediamine with triazine and carbonyl compounds in polyphosphoric acid (PPA). The use of benzonitrile in place of the carbonyl compounds in this reaction gives 6-phenyl-1,3,7-triazapyrenes.