Unique role of 2-hydroxyethylammonium acetate as an ionic liquid in the synthesis of Fe3O4 magnetic nanoparticles and preparation of pyridine derivatives in the presence of a new magnetically recyclable heterogeneous catalyst

abstractin this paper, 2-hydroxyethylammonium acetate (2-heaa) was used as the first functionalized ionic liquid for the facile, economical and environmentally friendly synthesis of fe3o4 nanoparticles by a co-precipitation method. the synthesized fe3o4 nanoparticles were used as solid material for supporting 2-heaa (fe3o4-2-heaa). the newly prepared fe3o4-2-heaa was characterized by tem, xrd, ft-ir, tga and elemental analysis and successfully applied as a magnetically recyclable heterogeneous catalyst for the efficient one-pot, three-component synthesis of 2-amino-3,5-dicarbonitrile-6-thio-pyridines. the catalyst was easily separated by an external magnet and reused at least five times without significant degradation in the activity. graphical abstract open image in new window