Fabrication of nano-[Fe3O4@SiO2@Si-Pr-Bipyr][FeCl4] as a novel magnetic nanocatalyst, and its utility for the construction of 1,2,4-triazolo[1,5-a]pyrimidines
- Department of Chemistry, Faculty of Nano and Bio Science and Technology, Persian Gulf University, Bushehr, Iran
- Department of Chemistry, Payame Noor University, Tehran, Iran
Received: 2024-12-10
Revised: 2025-05-01
Accepted: 2025-05-17
Published in Issue 2025-05-28
Copyright (c) -1 Abdolkarim Zare, Elham Jazinizadeh, Fatemeh Mostaghar, Habibeh Golchaman, Seyed Sajad Sajadikhah, Marziyeh Barzegar (Author)

This work is licensed under a Creative Commons Attribution 4.0 International License.
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Abstract
Nano-[Fe3O4@SiO2@Si-Pr-Bipyr][FeCl4] (NFSPBF), as a novel magnetic nanomaterial, was fabricated, and its structure was corroborated using EDX, elemental mapping, FE-SEM, XRD, FT-IR, TG, and VSM analyses. In continuation, NFSPBF was employed as an efficacious catalyst for the one-pot multi-component reaction of acetoacetanilide, aryl aldehydes, and 3-amino-1,2,4-triazole to give 1,2,4-triazolo[1,5-a]pyrimidines in high yields (86-95%) and short times (10-15 min). NFSPBF could act as a dual-functional catalyst; FeCl4− of nano-[Fe3O4@SiO2@Si-Pr-Bipyr][FeCl4] is a Lewis acid, and its pyridine moiety is a base. It was reusable for two times without a remarkable decrement in its catalytic performance.
Research Highlights
- Fabrication of nano-[Fe3O4@SiO2@Si-Pr-Bipyr][FeCl4] as a novel magnetic nanocatalyst was introduced.
- Full characterization of the nanocatalyst was performed.
- Utility of the catalyst for the construction of 1,2,4-triazolo[1,5-a]pyrimidines was checked.
- Constructing 1,2,4-triazolo[1,5-a]pyrimidines in high yields and short times were obtained.
- Proposing a mechanism based on dual-functionality of the catalyst was provided.
Keywords
- 3-Amino-1,2,4-triazole,
- Dual-functional catalyst,
- Magnetic nanomaterial,
- Nano-[Fe3O4@SiO2@Si-Pr-Bipyr][FeCl4],
- 1,2,4-Triazolo[1,5-a]pyrimidine
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