Studies with Polyfunctionally Substituted Heteroaromatics: Synthesis of Several New Thiazoles, Pyrazolo(5,1-c)triazines and of Polyfunctionally Substituted Pyridines and Pyrimidines.

Abstract Several thiazolin-4-one(3), 1,2,4-triazinethione (13), pyrazolo[1,5-c]-1,2,4-triazine (16) and pyridine (23) derivatives could be obtained via the reaction of iminoether (1) derivative with thioglycolic acid, aryldiazonium chloride, 3-arylpyrazol-5-yl diazonium chloride and alkylidenemalononitrile derivatives, respectively. The reaction mechanism for each one was discussed. All structure were suggested on the basis of elemental analyses and spectral data.