Design and characterization of an urea-bridged PMO supporting Cu(II) nanoparticles as highly efficient heterogeneous catalyst for synthesis of tetrazole derivatives DOI Creative Commons
Ehsan Valiey, Mohammad G. Dekamin

Scientific Reports, Год журнала: 2022, Номер 12(1)

Опубликована: Окт. 28, 2022

Abstract In this work, a new periodic mesoporous organosilica with urea-bridges produced by the reaction of (3-aminopropyl)triethoxysilane and toluene-2,4-diisocyanate (APS-TDU-PMO) is introduced. The obtained APS-TDU-PMO was found to be an appropriate support for loading Cu(II) nanoparticles afford supramolecular Cu@APS-TDU-PMO nanocomposite. Uniformity mesoporosity both synthesized nanomaterials including were proved different spectroscopic, microscopic or analytical techniques FTIR, EDX, XRD, FESEM, TEM, BET, TGA DTA. Furthermore, prepared nanomaterial also used, as heterogeneous recyclable catalyst, synthesis tetrazole derivatives through cascade condensation, concerted cycloaddition tautomerization reactions. Indeed, main advantages its simple preparation high catalytic activity well proper surface area which enable it work under solvent-free conditions. Also, introduced catalyst showed good stability reusability six consecutive runs address more green chemistry principles.

Язык: Английский

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

Somaye Beheshti,

Alireza Motavalizadehkakhky, Rahele Zhiani

и другие.

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

Процитировано

3
Recent Advances in the Catalytic Applications of Tin Dioxide-Based Materials in the Synthesis of Bioactive Heterocyclic Compounds DOI Creative Commons

Bhaskarjyoti Borah,

Sushmita Banerjee, Bharat Kumar Allam

и другие.

Tetrahedron Green Chem, Год журнала: 2024, Номер 4, С. 100048 - 100048

Опубликована: Дек. 1, 2024

Metal oxides are versatile catalysts in organic synthesis, exhibiting diverse properties such as acidity, basicity, redox behaviour, and stability. Among these, tin dioxide (SnO₂) stands out for its resilience durability, making it a preferred catalyst. The reduced ionic character high oxidation state (+4) of contribute to heightened acidity. Tin based materials have gained significant attention heterocycle cross-coupling, decarboxylation, ring-opening ring-closing reactions, biodiesel glycerol transformations. Additionally, SnO₂-based also employed photocatalysts photo-electrocatalysts.

Язык: Английский

Процитировано

3
A decade of synthesis of N-heterocyclic derivatives via magnetically retrievable Fe3O4@SiO2@Cu(II) nanocatalysts: A review (2013-present) DOI

Akta Soni,

Parveen Kumar, Vijesh Tomar

и другие.

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

Процитировано

8
The preparation, characterization and catalytic activity of porous tragacanth gum -g-poly (p-styrene sulfonamide-co-acrylamide) DOI

Mahtab Yaghubzadeh,

Sedigheh Alavinia,

Ramin Ghorbani‐Vaghei

и другие.

Journal of Molecular Structure, Год журнала: 2023, Номер 1293, С. 136265 - 136265

Опубликована: Июль 28, 2023

Язык: Английский

Процитировано

8
Design and characterization of an urea-bridged PMO supporting Cu(II) nanoparticles as highly efficient heterogeneous catalyst for synthesis of tetrazole derivatives DOI Creative Commons
Ehsan Valiey, Mohammad G. Dekamin

Scientific Reports, Год журнала: 2022, Номер 12(1)

Опубликована: Окт. 28, 2022

Abstract In this work, a new periodic mesoporous organosilica with urea-bridges produced by the reaction of (3-aminopropyl)triethoxysilane and toluene-2,4-diisocyanate (APS-TDU-PMO) is introduced. The obtained APS-TDU-PMO was found to be an appropriate support for loading Cu(II) nanoparticles afford supramolecular Cu@APS-TDU-PMO nanocomposite. Uniformity mesoporosity both synthesized nanomaterials including were proved different spectroscopic, microscopic or analytical techniques FTIR, EDX, XRD, FESEM, TEM, BET, TGA DTA. Furthermore, prepared nanomaterial also used, as heterogeneous recyclable catalyst, synthesis tetrazole derivatives through cascade condensation, concerted cycloaddition tautomerization reactions. Indeed, main advantages its simple preparation high catalytic activity well proper surface area which enable it work under solvent-free conditions. Also, introduced catalyst showed good stability reusability six consecutive runs address more green chemistry principles.

Язык: Английский

Процитировано

13