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Synthesis and Application of Xanthan Gum based Supported Magnetic Ionic Liquids as a Green Catalyst for one-pot Synthesis of Thioether linked 4-Hydroxycoumarin Derivatives
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DOI：10.1007/s10924-026-03918-z.png)
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Abstract
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Compared to neat magnetic ionic liquids (MILs), supported ionic liquids (SILs) provide notable provide notable benefits, particularly in terms of facile separation and reusability, while significantly mitigating common limitations. MILs often suffer from disadvantages such as high cost, potential toxicity, and challenges associated with product isolation. To address this issue, a xanthan gum based supported magnetic ionic liquid ([XGIM][FeCl4]) was synthesized by immobilizing IL onto backbone of xanthan gum (XG) which is the most prevalent polysaccharide in nature and economical in industrial waste followed by anion exchange with anhydrous FeCl3 by using ultra probe sonication. [XGIM][FeCl4] was thoroughly characterized using various techniques such as FTIR, FE-SEM, EDS, elemental, TGA, vibrational Raman spectra, VSM and EPR. In addition, [XGIM][FeCl4] served as an effective organocatalyst for synthesizing thioether-linked 4-hydroxycoumarin-benzothiazole, benzoxazole and benzimidazole derivatives under mild reaction conditions. Therefore, incorporating a magnetic core as the counter anion with the xanthan gum cationic framework enables rapid magnetic separation without filtration or centrifugation, allowing up to nine reuse cycles.
Keywords:
Supported magnetic ionic liquid
Organocatalyst
Xanthan Gum
Reusability
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