Reaction of 4??aryl??1, 2, 4??triazines with hydrazine

YA Ibrahim, MM Eid, MA Badawy…

Index: Ibrahim, Y. A.; Eid, M. M.; Badawy, M. A.; Abdel-Hady, S. A. L. Journal of Heterocyclic Chemistry, 1981 , vol. 18, p. 953 - 956

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Citation Number: 10

Abstract

Abstract The action of hydrazine on 3, 5-dioxo-4-aryl-2, 3, 4, 5-tetrahydro-1, 2, 4-triazines gave 4-amino-3, 5-dixo-2, 3, 4, 5-tetrahydro-1, 2, 4-triazines. The intermediates of this reaction were isolated and shown to be α-ketoacidhydra-zide 4-arylsemicarbazones and not the α-ketoanilidecarbohydrazones. The realtive rates of cyclization of the latter isomeric derivatives provide a support for a proposed intermediates which were not isolated in the ...

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