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<p>In this research, Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@NHCO-Zr-MOF was designed and synthesized as a magnetic metal-organic framework (H-bond Magnetic-MOFs based catalyst). This H-bond catalyst was fully characterized by different techniques: FT-IR, SEM, PXRD, EDX, Mapping, <i>N</i><sub><i>2</i></sub> adsorption/desorption (BET/BJH), TGA/DTG and Vibrating sample magnetometry (VSM) proving the structure of the catalyst. A wide range of pyrazolo[3,4-<i>b</i>]pyridine and pyrazolo[3,4-<i>b</i>]quinolin derivatives were synthesised using the abovementioned magnetic metal-organic framework, via cooperative vinylogous anomeric-based oxidation (CVABO) with good yields (70–85%). The synthesized compounds were identified using various techniques: melting point, FT-IR, <sup>1</sup>H-NMR and <sup>13</sup>C-NMR. The major advantages are a short reaction time, high efficiency of synthesized products, easy separation of the catalyst, high chemical and thermal stability. Therefore, the present study provides a reasonable and promising approach for the synthesis of porous catalysts with suitable separation capability, especially in organic molecule preparation.</p>

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Catalytic synthesis of pyrazolo[3,4-b]pyridines and pyrazolo[3,4-b]quinolins via a cooperative vinylogous anomeric based oxidation using a new H-bond magnetic-MOFs

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月3日

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  • Milad Mohammadi Rasooll,
  • Hassan Sepehrmansourie,
  • Mahmoud Zarei,
  • Ali Reza Ataee-Najari,
  • Yanlong Gu,
  • Mohammad Ali Zolfigol

摘要

In this research, Fe3O4@SiO2@NHCO-Zr-MOF was designed and synthesized as a magnetic metal-organic framework (H-bond Magnetic-MOFs based catalyst). This H-bond catalyst was fully characterized by different techniques: FT-IR, SEM, PXRD, EDX, Mapping, N2 adsorption/desorption (BET/BJH), TGA/DTG and Vibrating sample magnetometry (VSM) proving the structure of the catalyst. A wide range of pyrazolo[3,4-b]pyridine and pyrazolo[3,4-b]quinolin derivatives were synthesised using the abovementioned magnetic metal-organic framework, via cooperative vinylogous anomeric-based oxidation (CVABO) with good yields (70–85%). The synthesized compounds were identified using various techniques: melting point, FT-IR, 1H-NMR and 13C-NMR. The major advantages are a short reaction time, high efficiency of synthesized products, easy separation of the catalyst, high chemical and thermal stability. Therefore, the present study provides a reasonable and promising approach for the synthesis of porous catalysts with suitable separation capability, especially in organic molecule preparation.