Investigation of the reactivity of 4-amino-5-hydrazineyl-4H-1,2, 4-triazole-3-thiol towards some selected carbonyl compounds: synthesis of novel triazolotriazine-, triazolotetrazine-, and triazolopthalazine derivatives
2019
The reactivity of 4-amino-5-hydrazineyl-4H-1,2,4-triazole-3-thiol (1) towards several carbonyl compounds was investigated. We have found that on treatment of 1 with isatoic anhydride (2), 1,8-naphthalic anhydride (4), diphenic anhydride (6), pyromellitic dianhydride (8), and tetrabromophthalic anhydride (10), the reaction proceeds to give triazolotetrazine- and triazolophthalazine derivatives in good yields using simple experimental procedures. The structure of the synthesized compounds was confirmed using different spectroscopic data (¹H NMR, ¹³C NMR, mass spectrometry, and elemental analysis). The mechanism of the obtained products was also discussed.
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