Fe3O4@NCs/BF0.2: A magnetic bio-based nanocatalyst for the synthesis of 2,3-dihydro-1H-perimidines

Nanocellulose (NC) materials have some unique properties, which make them attractive as organic or inorganic supports for catalytic applications. Nanocatalysts with diameters of less than 100nm are difficult to separate from the reaction mixture, therefore, magnetic nanoparticles (MNPs) were used as catalysts to overcome this problem. Fe3O4@NCs/BF0.2 as a green, bio-based, eco-friendly, and recyclable catalyst was synthesized and characterized using fourier-transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), X-ray diffraction (XRD), X-ray fluorescence (XRF), Brunauer-Emmett-Teller (BET), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA) techniques. Fe3O4@NCs/BF0.2 was employed for the synthesis of 2,3-dihydro-1H-perimidine derivatives via a reaction of 1,8-diaminonaphthalene with various aldehydes at room temperature under solvent-free conditions. The present procedure offers several advantages including a short reaction time, excellent yields, easy separation of catalyst, and environmental friendliness.