Synthesis of 4-Hydroxy-4,5-dihydro-1,2,4-triazol-5-ones

Article abstract of DOI:10.1007/BF00810474

A series of hydroxamic acid ethoxycarbonylhydrazides was obtained by reactions of ester ethoxycarbonylhydrazones with hydroxylamine.The corresponding 3-substituted 4-hydroxy-4,5-dihydro-1,2,4-triazol-5-ones were synthesized by cyclization of these hydroxa