A review of the latest advancements in using β-cyclodextrin-based as supramolecular catalysts for Heck reactions

Carbohydrate Research, Год журнала: 2025, Номер 550, С. 109381 - 109381

Опубликована: Янв. 13, 2025

Язык: Английский

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Recent advances in β-cyclodextrin-based catalyst systems for the synthesis of heterocyclic compounds via multicomponent reactions (MCRs)

Arabian Journal of Chemistry, Год журнала: 2024, Номер 17(10), С. 105967 - 105967

Опубликована: Авг. 15, 2024

Язык: Английский

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Magnetic nickel nanoparticle catalyst on β-cyclodextrin-modified Fe3O4 for nitroarene hydrogenation

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

Опубликована: Ноя. 18, 2024

This study developed a novel and highly active heterogeneous catalyst of nickel nanoparticles supported on β-cyclodextrin-grafted magnetic Fe3O4 (Ni@β-CD@Fe3O4). β-CD, biodegradable, biocompatible, green, non-toxic cyclic oligosaccharide, was modified with to create β-CD@Fe3O4. The then immobilized onto this support. characterized using FT-IR, XRD, TEM, AAS, FE-SEM, TGA, EDX, DRS-UV-Vis spectra, VSM techniques. catalytic activity Ni@β-CD@Fe3O4 evaluated for the reduction nitroarene compounds in water at 25 ℃. nanocatalyst indicated great selectivity reducing various nitroarenes, including nitrobenzene, nitroaniline, nitrotoluene, nitrophenol derivatives. Additionally, showed significant reusability could be easily separated an external magnet, highlighting its potential green chemistry sustainable industrial applications.

Язык: Английский

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Selective oxidation of benzylic alcohols to aldehydes by C-symmetric diol substituted cobalt phthalocyanine-mesoporous silica nanostructure

Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 113961 - 113961

Опубликована: Янв. 1, 2025

Язык: Английский

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Enhanced Esterification of Benzyl Alcohol with Acetic Acid using Sulfated Metal-Incorporated MCM-48: A Stable and Reusable Heterogeneous Catalyst

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Фев. 14, 2025

Sulfated metal-incorporated MCM-48 mesoporous silicates were synthesized hydrothermally using tetraethyl orthosilicate (TEOS) as the silica precursor and cetyltrimethylammonium bromide (CTAB) structure-directing agent. The materials extensively characterized through techniques, such powder X-ray diffraction (PXRD), N2 adsorption-desorption, diffuse reflectance UV-vis spectroscopy (UV-vis DRS), Fourier transform infrared (FT-IR), NH3-temperature-programmed desorption (NH3-TPD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) with energy dispersive (EDX), inductively coupled plasma optical emission (ICP-OES). PXRD confirmed retention of well-ordered structure in modified materials, while DRS revealed partial incorporation metal ions their preferred tetrahedral coordination within framework. Mesoporosity was verified adsorption-desorption isotherms, NH3-TPD results showed enhanced acidity sulfated catalysts. Catalytic performance tested esterification benzyl alcohol acetic acid under liquid-phase conditions. optimized reaction parameters, a 9% (w/w) S-Fe-MCM-48 catalyst, to molar ratio 2:1, temperature 60 °C, solvent-free system over 6 h, yielded acetate 98.9% selectivity major product. Reusability tests demonstrated robustness catalyst five successive cycles, indicating its potential suitability for industrial applications.

Язык: Английский

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Ecologically Sound Syntheses of Imidazoindole Derivatives Mediated by Cu-MCM-41-phen under Room Temperature

Silicon, Год журнала: 2025, Номер unknown

Опубликована: Фев. 14, 2025

Язык: Английский

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Copper complex of bis(pyridin-3-ylmethyl)carbamimidothioate on mesoporous KIT-6 as a homoselective and stable nanocatalyst for the synthesis of tetrazoles

Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 114454 - 114454

Опубликована: Март 1, 2025

Язык: Английский

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Application of a copper complex supported on magnetic nanoparticles loaded on SBA-15 for Suzuki reaction under green and mild conditions

Research on Chemical Intermediates, Год журнала: 2025, Номер unknown

Опубликована: Апрель 19, 2025

Язык: Английский

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Revolutionizing acridine synthesis: novel core-shell magnetic nanoparticles and Co-Zn zeolitic imidazolate framework with 1-aza-18-crown-6-ether-Ni catalysts

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

Опубликована: Окт. 28, 2024

Nanoparticles have emerged as a critical catalyst substrate due to their exceptional features, such catalytic efficiency, high stability, and easy recovery. In our research, we developed an innovative environmentally friendly magnetic mesoporous nanocatalyst. Using the co-precipitation method, produced nanoparticles (Fe3O4) coated them with Zeolitic imidazolate frameworks (ZIFs) enhance surface area chemical stability. The resulting was functionalized 1-aza-18-crown-6-ether nickel metal. Our prepared has been rigorously evaluated using advanced techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer-Emmet-Teller (BET), vibrating sample magnetometry (VSM), scanning electron microscopy energy dispersive (SEM-EDS), inductively coupled plasma (ICP), elemental mapping analysis (EMA), thermogravimetric (TGA), transmission (TEM). By synthesizing acridine derivatives, demonstrated efficiency of in organic compound synthesis. Through optimization, established ideal parameters for processes, amount, temperature, time, ultrasonic use. proven exhibit remarkable physical properties, porosity, temperature resistance, recyclability. Notably, heterogeneous nanocatalyst shown outstanding performance can be recycled six times without any loss affirming its potential acridine.

Язык: Английский

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The application of magnetic nanoparticles based β-cyclodextrin as recoverable catalyst in various organic transformations: An overview

Arabian Journal of Chemistry, Год журнала: 2024, Номер 18(1), С. 106080 - 106080

Опубликована: Дек. 11, 2024

Язык: Английский

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