2-Diazoacethydrazide derivatives and their ring-chain transformations
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Yurii A. Rosin , Elena A. Vorob'eva , Yurii Y. Morzherin , Alexander S. Yakimov , Wim Dehaen and Vasilii A. Bakulev
Abstract
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.