Synthesis of new condensed analogs of isoindolinium salts

Quaternary ammonium salts that contain a 3-(-naphthyl)propargyl group in addition to a group of the propargyl type undergo intramolecular cyclization of the diene-synthesis type under base-catalysis conditions to give condensed isoindolinium analogs.Communication 209 from the series Research on amines and ammonium compounds. See 1] for Communication 208.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 759–762, June, 1991.