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Research reveals the effectiveness of ionic liquid supported on Fe3O4-lignin in synthesizing dihydropyrano derivatives, suggesting its potential applications in organic synthesis.
To extend the use of supported ionic liquids as effective heterogeneous catalysts, in this research, the ionic liquid immobilized on magnetic lignin (Fe3O4-lignin-SO3/IL) was used as an environmentally friendly, and recyclable catalyst for the synthesis of dihydropyrano[3,2-c]chromene derivatives via a one-pot reaction between aromatic aldehydes, malononitrile, and 4-hydroxycoumarin. This method offers the benefits of high yield, short reaction times, straightforward processing, and its potential for green applications in pharmaceutical and chemical sectors. Furthermore, the detailed role of Fe3O4-lignin-SO3/IL as a catalyst in chemical reactions was examined, providing insights into its mechanism and potential uses in organic synthesis and other chemical processes.
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Gerami et al. (2025) studied this question.
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