New heterocyclic sym-triazolopyrimidinium systems — Quinoline,pyridazine, and phthalazine derivatives

Pyrimido1′,2′:1,5]-sym-triazolo4,3-b]pyridazinium, pyrimido1′,2′:1,5]-sym-triazolo-4,3-b]phthalazinium, and pyrimido1′,2′:1,5]-sym-triazolo4,3-a]quinoliniumsalt derivatives were obtained by condensation of 3-amino-sym-triazolo4,3-b]pyridazinium, 3-amino-sym-triazolo3,4-a]phthalazinium, and 1-amino-sym-triazolo4,3-a]quinolinium salts with β-diketories and 1,1,3,3-tetraethoxypropane. The structures of the reaction products were confirmed by the P MR spectra.