%0 Journal Article %T Friedländer Synthesis of Substituted Quinolines Using an Efficient and Reusable Brønsted Acid Ionic Liquid Supported on Fe3O4@SiO2 Nanoparticles under Solvent-free Conditions %J Organic Chemistry Research %I Iranian Chemical Society %Z 2383-242X %A Fallah-Mehrjardi, Mehdi %A Kalantari, Samaneh %D 2020 %\ 06/01/2020 %V 6 %N 1 %P 137-149 %! Friedländer Synthesis of Substituted Quinolines Using an Efficient and Reusable Brønsted Acid Ionic Liquid Supported on Fe3O4@SiO2 Nanoparticles under Solvent-free Conditions %K Magnetic nanoparticles %K Supported ionic liquids %K Quinolines %K Friedländer synthesis %K Solvent-free conditions %R 10.22036/org.chem.2020.202084.1217 %X In this study, a highly efficient and recyclable Brønsted acid ionic liquid, 1-methyl-3-(3-triethoxysilylpropyl)-1H-imidazol-3-ium hydrogensulfate, immobilized on the surface of Fe3O4@SiO2 (MNP-IL-HSO4) was prepared and characterized. Then, the catalytic activity of this nanomagnetic catalyst was investigated in the Friedländer synthesis of substituted quinolines through the cyclocondensation reaction of o-aminoaryl ketones with α-methylene carbonyl compounds under solvent-free conditions. The present protocol has several advantages, including short reaction times, high yield of products, simplicity in operation, simple work-up and reusability of the catalyst. %U https://www.orgchemres.org/article_107411_8efdbefbe554da26f5be22e50732e375.pdf