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

Abstract

The present article reports the synthesis of a new magnetic mesoporous nanocomposite with core-shell structure, formulated as Fe 3 O 4 @MCM-41@ZrCl 2 . 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 Fe 3 O 4 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.

Recent progress of nanocatalyst in the synthesis of heterocyclic compounds by barbituric acids

“…In 2018, Shirini and his research team introduced an effective, stable, and eco‐friendly inorganic/organic magnetite nanocatalyst of Fe 3 O 4 @MCM‐41@Zr‐piperazine for the one‐pot synthesis of products 4 in ethanol at 80°C using three‐component BA 1, aldehyde 2 , and malononitrile ( 3 ) (Scheme 49). Excellent yields (59–92%), mild conditions, product purity, operational simplicity, practicability, economic and environmental profits, and reusable five times are considered the privileges of this method and put it in the branch of green chemistry 68 …”

“…In the last step, piperazine was added to the material of the prior stage to produce piperazine‐functionalized Fe 3 O 4 @MCM‐41@Zr‐MNPs (Scheme 50). 68 …”

WELPSA: A natural catalyst of alkali and alkaline earth metals for the facile synthesis of tetrahydrobenzo[b]pyrans and pyrano[2,3‐d]pyrimidinones as inhibitors of SARS‐CoV‐2

“…The authors declare no conflict of interest. [14] 2 F e 3 O 4 @SiO 2 @BenzIm-Fc[Cl]/NiCl 2 EtOH: H 2 O (4:2) 95 [15] 3 [ H 2 -DABCO][H 2 PO 4 ] 2 EtOH: H 2 O (2:1) 90 [16] 4 RHPrBPCl nanocomposite H 2 O 9 0 [18] 5 Glutamic acid EtOH 90 [19] 6 CaHPO 4 EtOH: H 2 O (1:4) 91 [22] 8 EtOH: H 2 O (2:1) 95 [16] 2 DAHP EtOH: H 2 O (1:1) 81 [17] 3 L-Proline EtOH: H 2 O (1:1) 80 [21] 4 CaHPO 4 EtOH: H 2 O (1:4) 89 [22] 5…”

“…Given this, a large number of catalysts were introduced for the three‐component synthesis of tetrahydrobenzo[ b ]pyran and pyrano[2,3‐ d ]‐pyrimidinone/thiones under multifarious catalytic circumstances. [ 9 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ] There are numerous catalysts derived from fruit extracts, and agro‐wastes have been utilized to synthesize various heterocycles. [ 35 , 36 , 37 , 38 , 39 ]…”

A new copper-supported zinc ferrite as a heterogeneous magnetic nanocatalyst for the synthesis of bis(pyrazolyl)methanes and oxidation of sulfides

“…In catalytic studies, the recovery and reusability of the catalyst due to its adaptability to environmental concerns are important features of the catalytic process that has received much attention in recent years [3][4][5][6][7] . The recovery and reusability of catalysts is an important challenge in modern research because the employed catalysts are often very cost-effective or the obtained products are often very valuable from the economical and medicinal points of view [8][9][10] . Recently, heterogeneous catalysts containing an organic-inorganic material hybrid, have received much attention due to having both the advantages of homogeneous and heterogeneous catalysts [11][12][13][14][15] .…”