Synthesis and Characterization of a Hercynite-Supported Copper(II) Complex Based on 1,10-Phenanthroline-5,6-dione and Acetylacetone Building Blocks and Its Catalytic Application in Annulation Reactions

Langmuir, Год журнала: 2024, Номер 40(43), С. 22773 - 22786

Опубликована: Окт. 18, 2024

In the present work, a novel Cu(II) complex containing 10-phenanthroline-5,6-dione (phen-dione) and acetylacetone (acac) was prepared via solid-phase synthesis on silica-modified hercynite magnetic nanoparticles (MNPs). The resulting structure underwent thorough structural analysis using diverse instrumental techniques. catalytic potential of synthesized successfully demonstrated in 2-amino-3-cyano-4

Язык: Английский

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Phosphomolybdic acid hydrate encapsulated in MIL-53 (Fe): a novel heterogeneous heteropoly acid catalyst for ultrasound-assisted regioselective nitration of phenols

RSC Advances, Год журнала: 2022, Номер 13(1), С. 674 - 687

Опубликована: Дек. 23, 2022

In this study, a heterogeneous catalyst, PMA@MIL-53 (Fe) (MIL ⇒ Matériaux de l'Institut Lavoisier), has been used to replace the usual mineral acids such as sulfuric acid. A wide variety of nitration methods require use mixture concentrated nitric acid and acid, which result in producing large amount acidic waste. During recent years, system for aromatic compounds highly considered by chemists due some specific advantages, i.e. easy separation product from reaction mixture, possibility recycling reusing etc. Herein, catalyst was synthesized using metal-organic framework heteropoly phosphomolybdic The prepared similar method MIL-53 synthesis. Afterwards, FeCl3·6H2O 1,4-benzene dicarboxylic (BDC) dimethylformamide solution were placed an ultrasound bath and, then, HPA (heteropoly acid) added mixture. PMA (phosphomolybdic encapsulation confirmed various analysis. Under optimal conditions, catalytic activity evaluated phenol under ultrasonic waves. Besides, ratio two products ortho para obtained GC. Optimum conditions reached after 15 minutes, way that loaded 0.02 g efficiencies ortho-nitrophenol nitrophenol 54.98 45.01, respectively.

Язык: Английский

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Cu(ii) immobilized on poly(guanidine-sulfonamide)-functionalized Bentonite@MgFe₂O₄: a novel magnetic nanocatalyst for the synthesis of 1,4-dihydropyrano[2,3-c]pyrazole

RSC Advances, Год журнала: 2023, Номер 13(16), С. 10667 - 10680

Опубликована: Янв. 1, 2023

In this paper, we aim at synthesizing a new nanocomposite material in which bentonite acts as nucleation site for MgFe2O4 nanoparticles precipitation the attendance of an external magnetic field (MgFe2O4@Bentonite). Moreover, poly(guanidine-sulfonamide), novel kind polysulfonamide, was immobilized on surface prepared support (MgFe2O4@Bentonite@PGSA). Finally, efficient and environment-friendly catalyst (containing nontoxic copper, MgFe2O4@Bentonite) by anchoring copper ion MgFe2O4@Bentonite@PGSAMNPs. The synergic effect (MNPs), bentonite, PGSA, species observed while conducting control reactions. synthesized Bentonite@MgFe2O4@PGSA/Cu, characterized using energy-dispersive X-ray spectroscopy (EDAX), scanning electron microscopy (SEM), transmission (TEM), thermogravimetric analysis (TGA), diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, applied highly heterogeneous to synthesize 1,4-dihydropyrano[2,3-c] pyrazole yielding up 98% 10 minutes. Excessive yield, quick reaction time, water solvent, turning waste wealth, recyclability are important advantages present work.

Язык: Английский

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Production and characterization of Fe3O4@SiO2@TMEDA-Pd as a very effectual interphase catalyst for the rapid preparation of di-aryl sulfides and pyrido-dipyrimidines

Silicon, Год журнала: 2023, Номер 15(10), С. 4539 - 4554

Опубликована: Март 4, 2023

Язык: Английский

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Preparation of nanodiamond anchored on copper tannic acid as a heterogenous catalyst for synthesis of 1,4-benzodiazepines derivatives

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Апрель 15, 2024

Abstract In this research, a new and eco-friendly heterogeneous catalyst (ND@Tannicacid-Cu) was synthesized based on nanodiamond copper tannic acid via esterification process. The as-prepared characterized by Fourier transforms infrared spectroscopy (FT-IR), energy dispersive X-ray (EDX), scanning electron microscopy (SEM), diffraction (XRD) methods. catalytic efficacy of the intended examined one-step three-component reaction 1,4-benzodiazepine derivatives from mixture ortho-phenylenediamine, aromatic aldehydes, dimedone under mild conditions. all instances, corresponding 2,4-benzodiazepines were with high efficiency, short time, straightforward work up procedure, no requirement for column-chromatography, cost-effective catalyst. easily recycled using fillers, it can be reused eight cycles without significantly diminishing its performance.

Язык: Английский

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Palladium doped PDA-coated hercynite as a highly efficient catalyst for mild hydrogenation of nitroareness

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Май 25, 2024

Hercynite magnetic nanoparticles were produced through the co-precipitation of ferrous and aluminum cations. The surface hercynite was respectively coated with silica, 2,4,6-trichloro-1,3,5-triazine, 1H-pyrazole-3,5-dicarboxylic acid to provide a suitable substrate for Pd(II) loading, furnishing Pd@Her-TCT-PDA. Subsequently, introduced reduced Pd(0) using NaBH

Язык: Английский

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Magnetic nanoparticle-catalyzed synthesis of indole derivatives: a green and sustainable method

Monatshefte für Chemie - Chemical Monthly, Год журнала: 2025, Номер unknown

Опубликована: Фев. 23, 2025

Язык: Английский

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A decade of synthesis of N-heterocyclic derivatives via magnetically retrievable Fe₃O₄@SiO₂@Cu(II) nanocatalysts: A review (2013-present)

Synthetic Communications, Год журнала: 2023, Номер 53(18), С. 1469 - 1505

Опубликована: Июнь 28, 2023

Medicinal chemistry and synthetic organic rely primarily on C-N bonds for their structures because a variety of biologically active compounds, including natural products molecules, contain N-heterocyclic as subunits, they have been assigned privileged position in drug development due to improved solubility ability form salts, both which contribute oral absorption bio-availability. In recent years, the copper-catalyzed cross-coupling reactions progressed rapidly with inexpensive, readily available, insensitive air, low-toxicity copper catalysts. The coupling strategy has used make N-heterocycles, wide range applications investigated excellent functional group tolerance. current review explores direct bond formation cyclization approaches fabricate triazole, tetrazole, various other derivatives that are catalyzed by magnetically retrievable (II)-impregnated silica-coated iron oxide nanocatalysts.

Язык: Английский

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Ni(ii) immobilized on poly(guanidine–triazine–sulfonamide) (PGTSA/Ni): a mesoporous nanocatalyst for synthesis of imines

RSC Advances, Год журнала: 2022, Номер 12(53), С. 34425 - 34437

Опубликована: Янв. 1, 2022

Mesoporous materials have been the subject of intense research regarding their unique structural and textural properties successful applications in various fields.

Язык: Английский

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Development of sustainable green catalysts for oxidation of alcohols via decorated palladium nanoparticles on magnetic carbon nanotube/MOF

Journal of Molecular Structure, Год журнала: 2023, Номер 1294, С. 136444 - 136444

Опубликована: Авг. 18, 2023

Язык: Английский

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