Liquid Phase Synthesis of 1,2-Dihydropyridazine-3,6-dione in the Presence of Ionite Catalysts
Dzhumadullaeva S.A. Baeshov A.B.
May 2021Pleiades journals
Russian Journal of Physical Chemistry A
2021#95Issue 5954 - 957 pp.
Abstract: The catalytic activity of synthetic ion-exchange resins was studied in the reaction between cis-butenedioic acid and hydrazine (aqueous medium; temperature, 95°C; 2–4 h) with the formation of heterocyclic hydrazide–1,2-dihydropyridazine-3,6-dione. It is established that the most effective catalysts are KU‑2-8 and KRF-10P cation exchangers. A probable mechanism of the process with the formation of adsorption complexes and the participation of fixed polymer-bound sulfonate ions and counterions of the cation exchanger is proposed on the basis of IR spectroscopic studies.
cis-butenedioic acid , hydrazine , intramolecular dehydration , ion exchangers
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Kh.A. Yassawi International Kazakh–Turkish University, Turkestan, 161200, Kazakhstan
Institute of Fuel, Catalysis and Electrochemistry named after D.V. Sokolsky, Almaty, 050000, Kazakhstan
Kh.A. Yassawi International Kazakh–Turkish University
Institute of Fuel
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