Fe₃O₄@NCs/BF_0.2: A magnetic bio‐based nanocatalyst for the synthesis of 2,3‐dihydro‐1H‐perimidines

Abstract

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 100 nm 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.

Recent Advances in the Synthesis of Perimidines and their Applications

“…Mirjalili et al . [ 98 ] synthesized a novel, green, nanocellulose-assisted magnetic nanocatalyst for the synthesis of 2,3-dihydro-1 H -perimidine from NDA and aromatic aldehydes in solvent-free conditions at ambient temperature. Fe 3 O 4 @NCs/BF 0.2 possesses characteristics such as inexpensiveness, bio-based synthesis, simple separation, recyclability that makes it eco-friendly, and that it is a green nanocatalyst.…”

Concise access to perimidines by palladium (II) complexes via acceptorless dehydrogenative coupling of alcohols

“…[ 1 ] Perimidines are an influential group of synthetic and non‐natural compounds among the diverse N‐heterocycles. [ 2 ] Perimidines comprise tricyclic heterocycles featuring ortho ‐ and peri ‐fused dihydropyrimidine ring to a naphthalene framework. [ 3 ] In addition, they serve as plasma display panels, liquid crystal displays, organic solar cells, optical recording media, and dye intermediates for polymers.…”

Highly dispersible Fe3O4‐Ag@OPO(OH)2 nanocomposites as a novel eco‐friendly magnetic retrievable catalyst for the reduction of p‐nitrophenol

“…Recently, several studies have been performed using plants' extract in the preparation procedure of the magnetically recoverable NCs as a catalyst for chemical synthesis. [ 25–28 ] The green synthesis preparation techniques for NCs are in fact methods involving natural solvents mainly aqueous biological extracts, microwave‐assisted synthesis, and biological systems. [ 29,30 ] These techniques have several merits compared to traditional chemical preparation, including low cost, simplicity, and bio‐compatibility for pharmaceutical applications.…”