Recent developments of supported and magnetic nanocatalysts for organic transformations: an up-to-date review

Gebre, Shushay Hagos

doi:10.1007/s13204-021-01888-3

Cited by 36 publications

(8 citation statements)

References 242 publications

(209 reference statements)

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“…They are used in organic reactions to synthesize important chemicals in industries and pharmaceutical sectors with high yield, selectivity, and reusability. [57] Nanomaterial-based catalysts are usually heterogeneous catalysts broken up into metal nanoparticles to enhance the catalytic process3. These metal nanoparticles have a high surface area, which can increase catalytic activity.…”

Section: Nano-catalyzed Synthesis Of Pyrano[23-d]pyrimidine Compoundsmentioning

confidence: 99%

Furo, Pyrano, and Pyrido[2,3‐d]Pyrimidines: A Comprehensive Review of Synthesis and Medicinal Applications

Rezaeifard,

Bakherad,

Navidpour

et al. 2024

ChemistrySelect

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Due to their extensive applications in pharmaceuticals and natural substances, organic synthesis and heterocyclic compounds have been at the forefront of research for many years. Pyrimidine is one of the heterocyclic compounds that have various derivatives with promising biological and pharmacological properties. This review article covers the synthesis and biological effects of pyrimidine derivatives, such as pyrano[2,3‐d]pyrimidines, pyrido[2,3‐d]pyrimidines, and furo[2,3‐d]pyrimidines. The compounds discussed in this review have a wide range of biological activities. Recent advances in green chemistry have led to the development of eco‐friendly synthetic methods for producing these bioactive heterocycles. This review aims to present various synthetic methods and biological effects of these compounds and provide new opportunities for organic chemists to develop potent nitrogen‐ and oxygen‐containing heterocycles for future applications. The review highlights examples of successful syntheses and applications of pyrimidine derivatives in the fields of antibacterial, antifungal, anticancer, enzyme inhibition, and antiviral research.

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Section: Nano-catalyzed Synthesis Of Pyrano[23-d]pyrimidine Compoundsmentioning

confidence: 99%

Furo, Pyrano, and Pyrido[2,3‐d]Pyrimidines: A Comprehensive Review of Synthesis and Medicinal Applications

Rezaeifard,

Bakherad,

Navidpour

et al. 2024

ChemistrySelect

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“…Moreover, most transition metals in heterogeneous catalysts are present in the form of highly dispersed nanoparticles, whose size may strongly affect the catalyst properties. 3,4 The high surface-tobulk ratio in nanostructured catalysts may further exacerbate the dependency of the catalyst properties on the coverage of surface species. 5 For example, CO is an abundant surface species in such societally important reactions as thermal or electrochemical CO and CO 2 reduction reactions as well as CO oxidation.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The concentration of surface species is known to remarkably affect the properties of the catalyst in certain reactions, , which implies possible differences between the properties exhibited by catalysts in laboratory and industrial settings. Moreover, most transition metals in heterogeneous catalysts are present in the form of highly dispersed nanoparticles, whose size may strongly affect the catalyst properties. , The high surface-to-bulk ratio in nanostructured catalysts may further exacerbate the dependency of the catalyst properties on the coverage of surface species …”

Section: Introductionmentioning

confidence: 99%

CO Dimerization on Cu Nanoparticles under High CO Coverage

Mendes,

Anjum,

Lin

et al. 2023

Ind. Eng. Chem. Res.

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Copper has attracted significant interest as a catalyst for thermal and electrochemical CO2 or CO reduction into valuable compounds. These reactions may involve significant quantities of CO adsorbed on the surface of Cu catalysts, whose properties are typically affected by nanostructuring. Here, we applied density functional theory (DFT) calculations to study the effect of CO coverage on the catalytic properties of 0.8 nm large Cu38 and 1.1 nm large Cu79 nanocrystallites. Even under mild conditions, CO is calculated to saturate the surface of Cu nanoparticles at an unusually high coverage of 1 ML. At this coverage, CO is calculated to adsorb predominantly on top sites, with some CO molecules occupying bridge sites on the {111} facets. Such high quantities of adsorbed CO led to profound changes in the electronic structure of surface Cu atoms, whose d-band center positions shift to lower energies by more than 0.7 eV. CO coverage was also calculated to have a profound effect on the catalytic properties of Cu particles in the exemplary reaction of CO dimerization into OCCO. Unexpectedly, the barriers for OCCO formation were calculated to increase by ∼0.6 eV at high CO coverage on Cu nanoparticles due to the intricate effect of coadsorbates on OCCO binding to Cu. Thus, the interplay between nanostructuring and adsorbate coverage is shown to have significant implications for heterogeneous catalysis and electrochemistry that are hard to predict based on chemical intuition.

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“…13 The occurrence of such materials at the nano-level induces a precise size and morphology with a high surface area leading to them being more reactive than their conventional bulk counterparts. 2,14,15 The nanostructures are easily manipulated into the desired size, structures, and architectures depending on the need for a wide range of applications. TMNs, as compared to mono and bimetallic nanostructures (BMNs), have shown superior performance in sensors, imaging, catalysis, and environmental applications due to the synergistic effects of each metal.…”

Section: Introductionmentioning

confidence: 99%