Based on MFe₂O₄(M=Co, Cu, and Ni): Magnetically recoverable nanocatalysts in synthesis of heterocyclic structural scaffolds

Glycolic acid‐supported cobalt ferrite‐catalyzed one‐pot synthesis of pyrimido[4,5‐b]quinoline and indenopyrido[2,3‐d]pyrimidine derivatives

“…Magnetic nanoparticle‐supported catalysts have drawn growing scientific attention due to certain merits, for instance, easy synthesis and functionalization, high surface areas, good dispersion, good stability, and simple separation by magnetic attraction. [ 7–9 ] Cobalt ferrite nanoparticles are of excellent physicochemical properties with improved stability and colloidal dispersibility under physiological conditions. [ 10–12 ] CoFe 2 O 4 is of particular interest for the biomedical field owing to high magneto‐crystalline anisotropy, high coercivity at room temperature, and good saturation magnetization.…”

A comprehensive review on synthesis of dihydropyrimidione via Biginelli reaction catalyzed by reusable magnetic nanocatalyst (from 2020–till date)

“…tetrahydrobenzo [a]xanthene-11-ones [12] ; amidoalkyl naphthols [13] ; xanthene derivatives [14] ; cross-aldol condensation [15] ; 2-amino-4Hpyran derivatives [16] ; [1,3]-oxazole and 1H-pyrrolo-[1,3]-oxazole derivatives [17] ; 6-amino-5-[(4-hydroxy-2-oxo2H-chromen-3-yl)(aryl)methyl]-1,3-dimethyl-2,4,6(1H,3H)-pyrimidinedione derivatives [18] ; chromeno-pyrido[d]pyrimidine derivatives [19] ; spiro[indolequinazoline] derivatives [20] ; cyclocondensation reaction of 4-hydroxycoumarin, 3,4-methylenedioxyphenol, and aromatic aldehydes [21] ; azo chromene dyes [22] ; cyanopyrroloazepine derivatives [23] ; 1,3-dipolar cycloaddition reaction [24] ; 2,4,5-triaryl-1H-imidazoles [25] ; quinazolinone derivatives [26] ; tetrahydrobenzoxanthenones [27] ; α-aminonitriles [28] ; chromenes derivatives [29,30] ; α-aminonitriles and 2-methoxy-2-phenylacetonitrile derivative via Strecker-type reaction [31] ; dihyropyrimidiones [32] ; dihydroquinazolinone, octahydroquinazolinone, and benzimidazoloquinazolinone derivatives [33] ; quinazolines [34] ; 1-thioamidoalkyl-2-naphthols [35] ; hexahydroquinoline [36] ; benzoxanthenes [37] ; and polyhydroquinoline. [38] These reactions display high selectivity and atom economy because the final product retains nearly all of the substrates.…”

“…To develop environmentally friendly processes in green synthetic chemistry, the fusion of magnetic nanocatalysts and MCRs will emerge into a new strategic research area. Numerous studies have published research that shows combining MCRs and nanocomposites in ambient reaction circumstances provides improved results with high efficiency for organic synthesis and transformation, such as organic transformation [ 9 ] ; pyranopyrazole and pyranopyrimidine derivatives [ 10 ] ; mono and bis spiro pyrazolopyridines [ 11 ] ; tetrahydrobenzo[a]xanthene‐11‐ones [ 12 ] ; amidoalkyl naphthols [ 13 ] ; xanthene derivatives [ 14 ] ; cross‐aldol condensation [ 15 ] ; 2‐amino‐4 H pyran derivatives [ 16 ] ; [1,3]‐oxazole and 1 H ‐pyrrolo‐[1,3]‐oxazole derivatives [ 17 ] ; 6‐amino‐5‐[(4‐hydroxy‐2‐oxo2 H ‐chromen‐3‐yl)(aryl)methyl]‐1,3‐dimethyl‐2,4,6(1 H ,3 H )‐pyrimidinedione derivatives [ 18 ] ; chromeno‐pyrido[ d ]pyrimidine derivatives [ 19 ] ; spiro[indole‐quinazoline] derivatives [ 20 ] ; cyclocondensation reaction of 4‐hydroxycoumarin, 3,4‐methylenedioxyphenol, and aromatic aldehydes [ 21 ] ; azo chromene dyes [ 22 ] ; cyanopyrroloazepine derivatives [ 23 ] ; 1,3‐dipolar cycloaddition reaction [ 24 ] ; 2,4,5‐triaryl‐1 H ‐imidazoles [ 25 ] ; quinazolinone derivatives [ 26 ] ; tetrahydrobenzoxanthenones [ 27 ] ; α‐aminonitriles [ 28 ] ; chromenes derivatives [ 29,30 ] ; α‐aminonitriles and 2‐methoxy‐2‐phenylacetonitrile derivative via Strecker‐type reaction [ 31 ] ; dihyropyrimidiones [ 32 ] ; dihydroquinazolinone, octahydroquinazolinone, and benzimidazoloquinazolinone derivatives [ 33 ] ; quinazolines [ 34 ] ; 1‐thioamidoalkyl‐2‐naphthols [ 35 ] ; hexahydroquinoline [ 36 ] ; benzoxanthenes [ 37 ] ; and polyhydroquinoline. [ 38 ]…”

Electrochemical investigation of Ag mixed Cd–Cu nanoferrite mixed reduced graphene oxide as improved platform for supercapacitor application

“…Multi-metal/ metal oxide with hierarchical crystal structures exhibited superior electrode performance to those of their individual building blocks. Among the numerous metal oxides, spinel-type transition metal ferrites (MFe 2 O 4 , M = Fe, Co, Ni, Mn, Zn) have received a lot of attention as promising electrode materials because of their environmental safe, good electrical properties, thermal stability, and chemical manipulation ability with a wide range of applications [22][23][24][25][26][27][28][29][30][31]. Ferrites exhibited considerable electrical resistivity, a diversity of exchange interactions, good chemical and thermal durability, and superparamagnetism [32,33].…”