It was established that the structure of these derivatives of 1, 2, 3-triazole depends not only on the character of the substituent in the starting 5-aminopyrimidine but also on the conditions for carrying out the reaction. Thus in AcOH the formation of a 1, 2, 3-triazole carrying an N-formylcarboxamide substJtuent (IIr-u, w; Table i) is often observed. To obtain 1, 2, 3-triazoles substituted in position 4 (5) with an amidine, ester or cyano group, ...
