OICC Press Iranian Journal of Catalysis 2345-4865 10 4 2024 02 03 Synthesis of densely functionalized chromenes using a magnetic recoverable ionic liquid as the catalyst EN Forough Ramazanzadeh Department of Chemistry, Faculty of Sciences, Islamic Azad University, Rasht Branch, Rasht, Iran Manouchehr Mamaghani Department of Chemistry, Faculty of Sciences, University of Guilan, Rasht, Iran 0000-0002-2054-8685 Hossein Fallah-Bagher-Shaidaei Department of Chemistry, Faculty of Sciences, Islamic Azad University, Rasht Branch, Rasht, Iran Mehdi Sheykhan Department of Chemistry, Faculty of Sciences, University of Guilan, P.O. Box 41335-1914, Rasht, Iran Journal Article 2024 02 03 In the present study, robust, versatile and straightforward strategy for the diversity-oriented convergent synthesis of a vast range of highly functionalized and biologically effective chromenes is introduced with the reaction of malononitrile, dimedone/cyclohexadione/4-hydroxycoumarin and benzaldehydes in the presence of [γ-Fe2O3@HAp-Si(CH2)3BF4@DMIM] as the catalyst. The structures of all the newly synthesized products were characterized by spectroscopic (FT-IR, 1H NMR, 13C NMR) and elemental analyses. This method benefits from several advantages such as using easily recoverable magnetic nanocatalyst, simple workup, short reaction time and excellent yields. The prepared nanoparticles were fully characterized by various spectroscopic, thermal and magnetic analyses. The catalyst exhibited good reusability feature and no loss of activity was observed even after 8 successive runs.