Fe3O4@MCM-41@ZrCl2: A novel magnetic mesoporous nanocomposite catalyst including zirconium nanoparticles for the synthesis of 1-(benzothiazolylamino)phenylmethyl-2-naphthols

摘要

The present article reports the synthesis of a new magnetic mesoporous nanocomposite with core-shell structure, formulated as Fe3O4@MCM-41@ZrCl2. The prepared reagent was successfully characterized using different types of methods. The combination of unique properties of MCM-41 as an inimitable mesoporous compound, satisfying magnetic nature of the Fe3O4 magnetic nanoparticles and substantial catalytical applications of zirconium, caused the favorable efficiency of the intended nanocomposite in the synthesis of 1-(benzothiazolylamino)phenylmethyl-2-naphthols via a multicomponent condensation reaction of 2-aminobenzothiazole, 2-naphthol, and aromatic aldehydes in absence of solvent in good to high yields (70-90%). Green conditions of the reactions, easy separation, practicability, product purity, reusability of the catalyst, affordability, and environmentally profits are the considerable advantages of this protocol.