Abstract N 1-Phenyl-and N 1-(3, 5-dichloro-2-pyridyl) amidrazones have been synthesized by the reaction of imino esters of heterocyclic acids with phenyl-or (3, 5-dichloro-2-pyridyl) hydrazine. Acylation of the products with acid chlorides leads to 1-phenyl-and 1-(3, 5- dichloro-2-pyridyl)-3-hetaryl-5-R 2-1H-1, 2, 4-triazoles. Compounds of this type are also formed by the condensation of N-acylimino esters of heterocyclic acids with phenyl-or (3, 5 ...