1-Amino-1,2,3-triazol-5-olates 6, 13 and 14 have been obtained by the introduction of a diazo group into N-benzylidene-protected hydrazides of cyanoacetic and malonic acids. These compounds form open-chain isomers of 1-amino-5-hydroxy-1,2,3-triazoles upon acidification with an aqueous solution of HCl. Compounds8, 15 and 16 are the first examples of the group of α-diazoacethydrazides.
Y. A. Rosin, E. A. Vorob'eva, Y. Y. Morzherin, A. S. Yakimov, W. Dehaen and V. A. Bakulev, Mendeleev Commun., 1998, 8, 240 DOI: 10.1070/MC1998v008n06ABEH001032
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