Robust, highly active, and stable supported Co(<scp>ii</scp>) nanoparticles on magnetic cellulose nanofiber-functionalized for the multi-component reactions of piperidines and alcohol oxidation

Kargar, Pouya Ghamari; Bagherzade, Ghodsieh

doi:10.1039/d1ra00208b

Cited by 24 publications

(4 citation statements)

References 79 publications

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“…The synthesis of the chitosan was performed according to an already-established procedure 89 . Firstly, purified CS (1000 mg) was dissolved in 80 mL of a diluted 1% (w/w) aqueous AcOH solution at room temperature for 12 h. In another round bottom flask, 0.016 mol of 5-(chloromethyl)-2-hydroxybenzaldehyde 90 – 92 was dissolved in CH 2 Cl 2 . Then, the aldehyde solution was added dropwise to the CS solution under stirring and the mixture was heated to 50 °C for 5 h. After the end of the reaction, 0.016 mol of 1-Methyl imidazole was added to the CS-Schiff-base solution, and the mixture was refluxed for 24 h. Finally, the reaction mixture was collected by centrifugation, and washed with CH 2 Cl 2 (3 × 10 mL) to remove any unreacted imidazole, and aldehyde and dried in a vacuum oven at 40 °C for 12 h.…”

Section: Methodsmentioning

confidence: 99%

Advances in the greener synthesis of chromopyrimidine derivatives by a multicomponent tandem oxidation process

Ghamari Kargar,

Bagherzade

2023

Sci Rep

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A hydrophilic cobalt/copper heterogeneous bimetallic catalyst named mTEG-CS-Co/Cu-Schiff-base/IL was successfully synthesized from chitosan polysaccharide. The new catalyst was investigated and confirmed using various techniques including FT-IR, FE-SEM, EDX-EDS, XRD, TEM, TGA, AFM, NMR and ICP. The catalyst exhibited powerful catalyst activity for the tandem one pot oxidative chromopyrimidine reaction from benzyl alcohols under mild conditions, utilizing air as a clean source in a green protocol. The catalyst was compatible with a wide range of benzyl alcohols, and aldehydes formed in situ, and bis-aldehydes synthesized were condensed with urea/4‑hydroxycumarin to provide favorable products in good yields for all derivatives (14 new derivatives). The presence of tri-ethylene glycol and imidazolium moieties with hydrophilic properties on the mTEG-CS-Co/Cu-Schiff-base/IL nanohybrid provides dispersion of the nanohybrid particles in water, leading to higher catalytic performance. Furthermore, the reaction exhibited several other notable features, including low catalyst loading, the ability to be recycled for up to 6 stages, high atom economy, a simple work procedure, short reaction time, utilization of an environmentally friendly nanohybrid, and the replacement of volatile and organic solvents with water solvent.

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Section: Methodsmentioning

confidence: 99%

Advances in the greener synthesis of chromopyrimidine derivatives by a multicomponent tandem oxidation process

Ghamari Kargar,

Bagherzade

2023

Sci Rep

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“…Usage of ionic liquids (ILs) as solvents and even catalysts has been one of the critical properties in terms of environmental friendliness. − Despite their excellent benefits, they fail to offer practical applications, mainly due to their disadvantages such as their difficult separation, high viscosity, expensive nature, toxicity, and nonviability for recycling . These limitations have been partially addressed by supporting active IL-based catalysts and deploying them as heterogeneous catalysts.…”

Section: Introductionmentioning

confidence: 99%

TiO₂/g-C₃N₄/SO₃H(IL): Unique Usage of Ionic Liquid-Based Sulfonic Acid as an Efficient Photocatalyst for Visible-Light-Driven Preparation of 5-HMF from Cellulose and Glucose

Nayebi

Faraji

Bahadoran

et al. 2023

ACS Appl. Mater. Interfaces

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Upgrading of biomass wastes to value-added materials has been incessantly pursued worldwide with diverse applications, especially deploying photocatalytic composites encompassing metal oxides with acidic and carbon compounds. Herein, the fabrication of a morphologically unique acidic catalyst encompassing a two-dimensional (2D) TiO2/g-C3N4 heterojunction feature is described for the generation of 5-hydroxymethylfurfural (5-HMF), which exploits the acidic/ionic liquid (IL) bifunctional photocatalysis under visible light. The structural integrity of the synthesized TiO2/g-C3N4/SO3H(IL) was corroborated by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy–energy-dispersive spectroscopy (EDX–EDS), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), field emission scanning electron microscopy (FESEM), UV–vis, Tauc plots, transmission electron microscopy (TEM), and Brunauer–Emmett–Teller–Barrett–Joyner–Halenda (BET–BJH) analyses. Keeping environmental impact in mind, there are compelling advantages in the development of bio-derived pathways to access ILs from natural renewable resources. The outcomes of environmental assessments have revealed that the incorporation of TiO2 in g-C3N4 and ClSO3H can reduce the probability of recombination due to ionic charges present, therefore enhancing the photocatalytic activity via the transformation of cellulose and glucose to produce 5-HMF in higher yields, with the optimum conditions being reaction in water under a blue light-emitting diode (LED), at 100 °C, for 1–1.5 h. The main advantages of this production method include minimum number of synthetic steps as well as ample availability of and easy access to primary ingredients. While a significant volume of 5-HMF was produced under blue light-emitting diode (LED) radiation, the selectivity was drastically reduced in the dark. The salient attributes of the catalyst comprise stability in air, robustness, reusability, and its overall superior activity that is devoid of hazardous additives or agents. This inimitable method has uncovered a newer strategy for enhancing the photocatalytic attributes of deployed semiconducting materials for numerous photocatalytic functions while adhering to the tenets of environmental friendliness.

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“…In recent years, their catalytic applications have been developed. Fortunately, MOF-based materials, as an emerging class of functional porous materials, have stamped an essential breakthrough within the field of heterogeneous catalysis, especially for multicomponent reactions (MCRs). − MCRs can be more beneficial than consecutive, time-consuming multistep synthesis as they constitute one-pot reactions utilizing three or more beginning materials. − …”

Section: Introductionmentioning

confidence: 99%

BioMOF-Mn: An Antimicrobial Agent and an Efficient Nanocatalyst for Domino One-Pot Preparation of Xanthene Derivatives

2022

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In this paper, a new Mn-based metal–organic framework [UoB-6] was obtained via a one-step ultrasonic irradiation method with the ligand (H2bdda: 4,4′-(1,4-phenylenebis(azaneylylidene))bis(methaneylylidene))dibenzoic acid. The structural integrity of the synthesized BioMOF-Mn was corroborated by FT-IR, EDX, ICP, XRD, TEM, DLS, FESEM, and BET-BJH analyses. The aerobic oxidative domino reaction of benzyl alcohols or aldehydes with dimedone derivatives was performed in the presence of the UoB-6 catalyst to produce xanthene derivatives in good yields. Hot filtration and Hg poisoning tests proved the heterogeneous nature of the catalyst. Novel synthesized xanthene-based bis-aldehydes were introduced as potent HDAC1 inhibitors according to molecular docking calculations. Finally, the inhibitory activities of Mn-MOF nanoparticles were evaluated on Escherichia coli and Candida albicans. The MIC, MBC, and MFC values were determined from 2048 to 4096 μg·mL–1 according to antimicrobial susceptibility testing methods. The inhibitory effects of antimicrobial agents can be exacerbated when loaded on BioMOFs.

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Robust, highly active, and stable supported Co(ii) nanoparticles on magnetic cellulose nanofiber-functionalized for the multi-component reactions of piperidines and alcohol oxidation

Abstract: The new recyclable cobalt three-core magnetic catalyst obtained by anchoring a Schiff base ligand sector and cellulose nanofiber slings on MNP (Fe3O4) was prepared and named as MNP@CNF@ATSM–Co(ii).

Cited by 24 publications

References 79 publications

Advances in the greener synthesis of chromopyrimidine derivatives by a multicomponent tandem oxidation process

Advances in the greener synthesis of chromopyrimidine derivatives by a multicomponent tandem oxidation process

TiO₂/g-C₃N₄/SO₃H(IL): Unique Usage of Ionic Liquid-Based Sulfonic Acid as an Efficient Photocatalyst for Visible-Light-Driven Preparation of 5-HMF from Cellulose and Glucose

BioMOF-Mn: An Antimicrobial Agent and an Efficient Nanocatalyst for Domino One-Pot Preparation of Xanthene Derivatives

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Robust, highly active, and stable supported Co(ii) nanoparticles on magnetic cellulose nanofiber-functionalized for the multi-component reactions of piperidines and alcohol oxidation

Abstract: The new recyclable cobalt three-core magnetic catalyst obtained by anchoring a Schiff base ligand sector and cellulose nanofiber slings on MNP (Fe3O4) was prepared and named as MNP@CNF@ATSM–Co(ii).

Cited by 24 publications

References 79 publications

Advances in the greener synthesis of chromopyrimidine derivatives by a multicomponent tandem oxidation process

Advances in the greener synthesis of chromopyrimidine derivatives by a multicomponent tandem oxidation process

TiO2/g-C3N4/SO3H(IL): Unique Usage of Ionic Liquid-Based Sulfonic Acid as an Efficient Photocatalyst for Visible-Light-Driven Preparation of 5-HMF from Cellulose and Glucose

BioMOF-Mn: An Antimicrobial Agent and an Efficient Nanocatalyst for Domino One-Pot Preparation of Xanthene Derivatives

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TiO₂/g-C₃N₄/SO₃H(IL): Unique Usage of Ionic Liquid-Based Sulfonic Acid as an Efficient Photocatalyst for Visible-Light-Driven Preparation of 5-HMF from Cellulose and Glucose