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<p>The magnetic lignin particles were successfully functionalized with the Brønsted-acidic ionic liquid, 1-(propyl-3-sulfonate) vinyl imidazolium hydrogen sulfate, through surface anchoring techniques. To characterize the resulting Fe<sub>3</sub>O<sub>4</sub>/MPL-[IL] nanocomposite, various analytical methods, including FE-SEM, EDS, FT-IR, XRD, TEM, and VSM analysis, were used. The combined effect of the magnetic support structure and the flexible imidazolium-based ionic liquid enabled catalytic performance comparable to that seen in homogeneous systems. This hybrid catalyst demonstrated high effectiveness in the reaction between cyclohexanone and 2-amino-4-aryl-4<i>H</i>-benzo[<i>f</i>]chromene-3-carbonitrile derivatives, resulting in the synthesis of benzo [5,6]chromeno[2,3-<i>b</i>]quinolins. Key features of the Fe₃O₄/MPL-[IL] catalyst include its environmentally friendly nature, easy recovery through magnetic separation, and reliable reusability over multiple reaction cycles without losing magnetic integrity.</p>

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Design and synthesis of Fe3O4/MPL-[IL] as a novel and efficient magnetic nanocatalyst for the synthesis of benzo[5,6]chromeno[2,3-b]quinolin derivatives

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月11日

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  • Majidreza Gerami,
  • Mahnaz Farahi

摘要

The magnetic lignin particles were successfully functionalized with the Brønsted-acidic ionic liquid, 1-(propyl-3-sulfonate) vinyl imidazolium hydrogen sulfate, through surface anchoring techniques. To characterize the resulting Fe3O4/MPL-[IL] nanocomposite, various analytical methods, including FE-SEM, EDS, FT-IR, XRD, TEM, and VSM analysis, were used. The combined effect of the magnetic support structure and the flexible imidazolium-based ionic liquid enabled catalytic performance comparable to that seen in homogeneous systems. This hybrid catalyst demonstrated high effectiveness in the reaction between cyclohexanone and 2-amino-4-aryl-4H-benzo[f]chromene-3-carbonitrile derivatives, resulting in the synthesis of benzo [5,6]chromeno[2,3-b]quinolins. Key features of the Fe₃O₄/MPL-[IL] catalyst include its environmentally friendly nature, easy recovery through magnetic separation, and reliable reusability over multiple reaction cycles without losing magnetic integrity.