Catalytic Synthesis of 1,2,4-Triazine Scaffolds in the Presence of Nano-Titania-Supported Preyssler-Type Heteropoly Acid

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Khatami Seyed-Mola; Sheikhi-Mohammareh Seddigheh

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

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Journal: Karafan Year:2024 | Volume:21 | Issue:1 Page(s): 549-568

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Information Journal Paper

Title

Catalytic Synthesis of 1,2,4-Triazine Scaffolds in the Presence of Nano-Titania-Supported Preyssler-Type Heteropoly Acid

Author(s)

Khatami Seyed-Mola | Sheikhi-Mohammareh Seddigheh | Issue Writer Certificate

Keywords

Heterogeneous Catalyst Preyssler

Type Heteropolyacid Nano

Titania Heterocyclic Compounds Triazine

Abstract

Because there are many nitrogen-containing heterocyclic compounds among various drugs approved by the United States Food and Drug Administration (USFDA), the synthesis of biologically active heterocyclic building blocks is one of the most promising research areas in organic chemistry. In comparison to homogeneous catalysts, heterogeneous ones have attracted greater attention in the field of heterocyclic synthesis. Because heterogeneous catalysts are much more beneficial in terms of reusability, various heteropoly acids have been used as efficient heterogeneous catalysts in organic syntheses and transformations. Therefore, in the present study, Pressler-type heteropoly acid supported on TiO2 nanoparticles was used as a heterogeneous catalyst for the facile and one-step synthesis of triazines with good to excellent yields through the condensation reaction between semicarbazide or thio-semicarbazide and various alpha-di carbonyls under reflux conditions. The catalyst recovered from the reaction mixture exhibited long-term stability for several successive fresh runs with no significant drop in its catalytic activity.

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