Magnetically Separable Transition Metal Ferrites: Versatile Heterogeneous Nano‐Catalysts for the Synthesis of Diverse Bioactive Heterocycles

Kaur, Gurpreet; Devi, P. Suvarnalatha; Thakur, Sunil; Kumar, Atul; Chandel, Rajesh Kumar; Banerjee, Bubun

doi:10.1002/slct.201803600

Cited by 50 publications

(15 citation statements)

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“…All the melting points were recorded by open capillary method and are uncorrected. 1 H NMR and 13 C NMR spectra were recorded on a Bruker Avance (250 MHz) spectrometer using CDCl3 as the solvent and TMS as an internal standard. Thin-layer chromatography (TLC) was performed on precoated aluminium plates (silica gel 60 F254, Merck).…”

Section: Methodsmentioning

confidence: 99%

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Ezzatzadeh

2021

Asian J. Nanosci. Mater.

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In the present study, Zn-DABCO@Fe3O4 with a high surface area and readily was synthesized. The morphology, particle size distribution, and phase analysis of the Zn-DABCO@Fe3O4 nanopowders were characterized using the scanning electron microscope (SEM), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and X-ray diffraction (XRD) analysis. The prepared Zn-DABCO@Fe3O4 nanoparticle was utilized as efficient catalyst for selective oxidation of sulfides to sulfoxides using 30% H2O2 as oxidant. The products were achieved with good to excellent yields at room temperature with no over-oxidation of sulfoxides and disulfides to unexpected by-products. This catalyst can be magnetically recovered by applying an external magnet and reused for eight continuous cycles in both oxidation reactions without a notable loss in its catalytic activity. Furthermore, the oxidation of various sulfides was highly chemoselective, but O,O-acetals remained intact under the described reaction conditions.

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Section: Methodsmentioning

confidence: 99%

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Ezzatzadeh

2021

Asian J. Nanosci. Mater.

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“…Synthesis of pyrazoles. Gharib et al reported a facile protocol for the efficient synthesis of a series of pyrazole derivatives (22) from the reactions of various hydrazine derivatives (21) and 1,3-diketones (20) in the presence of Preyssler heteropoly acid (H14[NaP5W30O110]) as catalyst in water at room temperature (Scheme 8). 82 The solid heterogeneous catalyst was recovered easily and reused for five successive runs.…”

Section: Author(s)mentioning

confidence: 99%

Preyssler catalyst: a heterogeneous polyacidic catalyst for the efficient synthesis of diverse bioactive heterocyclic scaffolds

BANERJEE¹,

Priya²,

Sharma³

et al. 2022

Arkivoc

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Synthesis of biologically promising heterocyclic scaffolds under greener conditions is one of the most promising areas of research today in organic chemistry. Heterogeneous catalysis has received greater attention versus homogeneous catalysis as it is much more beneficial in terms of reusability of the catalysts. Among many others, various heteropoly acids have been used as efficient heterogeneous catalysts for diverse organic transformations. In the present review, we have summarized the literature related to the synthesis of various biologically promising heterocyclic scaffolds utilizing a catalytic amount of one such efficient and reusable heteropoly acid, the Preyssler catalyst.

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“…Magnetic nanoparticles are the particles group of heterogeneous catalysts with small size and highly active surface area. This catalyst was applied in different fields such as technological, medical, pharmacology, drug delivery and catalyst .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of 1H‐Isochromenes, 4H‐Chromenes and Orthoaminocarbonitrile Tetrahydronaphthalenes by CaMgFe₂O₄ Base Nanocatalyst

Naeimi

Mohammadi

2020

ChemistrySelect

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Designing protocols for the preparation of nanocatalyst in order to increase the yield of an organic reaction is a challenging task in modern chemistry. CaMgFe2O4 is a base nanocatalyst that prepared through sol‐gel method. This nanocatalyst has used for the synthesis of 1H‐isocromenes, 4H‐chromenes and ortho‐aminocarbonitrile tetrahydronaphthalenes through the multi‐component reactions. The starting materials for all of the reactions are cyclohexanone, benzaldehyde and malononitrile and the reaction followed with Michael addition and cyclization. Therefore, the different multicomponent reactions from the same materials arranged by using CaMgFe2O4 base nanocatalyst. The catalyst identified with XRD, EDX, SEM, VSM and XPS techniques and the organic compounds recognized with melting point, FT‐IR, 1H NMR and 13C NMR analyses.

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Magnetically Separable Transition Metal Ferrites: Versatile Heterogeneous Nano‐Catalysts for the Synthesis of Diverse Bioactive Heterocycles

Abstract: This review compiles the up to date literatures on the preparations and applications of the transition metal ferrites as an efficient, heterogeneous, magnetically separable nano‐catalyst for the synthesis of diverse bioactive heterocycles.

Cited by 50 publications

References 123 publications

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Preyssler catalyst: a heterogeneous polyacidic catalyst for the efficient synthesis of diverse bioactive heterocyclic scaffolds

Synthesis of 1H‐Isochromenes, 4H‐Chromenes and Orthoaminocarbonitrile Tetrahydronaphthalenes by CaMgFe₂O₄ Base Nanocatalyst

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Magnetically Separable Transition Metal Ferrites: Versatile Heterogeneous Nano‐Catalysts for the Synthesis of Diverse Bioactive Heterocycles

Abstract: This review compiles the up to date literatures on the preparations and applications of the transition metal ferrites as an efficient, heterogeneous, magnetically separable nano‐catalyst for the synthesis of diverse bioactive heterocycles.

Cited by 50 publications

References 123 publications

Untitled

Untitled

Preyssler catalyst: a heterogeneous polyacidic catalyst for the efficient synthesis of diverse bioactive heterocyclic scaffolds

Synthesis of 1H‐Isochromenes, 4H‐Chromenes and Orthoaminocarbonitrile Tetrahydronaphthalenes by CaMgFe2O4 Base Nanocatalyst

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Synthesis of 1H‐Isochromenes, 4H‐Chromenes and Orthoaminocarbonitrile Tetrahydronaphthalenes by CaMgFe₂O₄ Base Nanocatalyst