Catalytic efficiency of GO-PANI nanocomposite in the synthesis of N-Aryl-1,4-Dihydropyridine and hydroquinoline derivatives

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 22, 2025

Abstract In this research, graphene oxide-polyaniline (GO-PANI) nanocomposite was successfully synthesized and its catalytic performance evaluated for the synthesis of N-aryl-1,4-dihydropyridine (1,4-DHP) hydroquinoline derivatives. The GO nanosheets were prepared using Hummers’ method, in-situ polymerization aniline conducted with ammonium persulfate (APS) serving as initiator. demonstrated notable efficiency, achieving yields 80–94% 1,4-DHP derivatives 84–96% GO-PANI thoroughly characterized by various techniques, including Fourier Transforms Infrared spectroscopy (FT-IR), Field Emission Scanning Electron Microscopy (FE-SEM), X-ray Diffraction analysis (XRD), Thermogravimetric (TGA), Energy Dispersive (EDS), all which confirmed successful nanocomposite. Furthermore, after ten cycles reusability testing, retained high no significant degradation. This findings indicate that is a promising non-metal catalyst

Язык: Английский

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Stereoselective synthesis of CF₃-containing spirocyclic-oxindoles using N-2,2,2-trifluoroethylisatin ketimines: an update

RSC Advances, Год журнала: 2023, Номер 13(11), С. 7063 - 7075

Опубликована: Янв. 1, 2023

Recent updates on the synthesis of CF 3 -containing spirocyclic-oxindoles by employing N -2,2,2-trifluoroethylisatin ketimines are described in this review article.

Язык: Английский

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Sulfonic acid-functionalized nano zeolite NaY: a Brønsted acid catalyst for the green synthesis of pyridines and 1,4-dihydropyridines

New Journal of Chemistry, Год журнала: 2025, Номер 49(6), С. 2418 - 2431

Опубликована: Янв. 1, 2025

This study presents the development of a novel organo-inorganic hybrid material (zeolite-SO 3 H) through three-component reaction carbon disulfide and 1,3-propane sultone with aminopropyl-functionalized NaY zeolite.

Язык: Английский

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Aminocatalytic, Stereoselective Synthesis of Tetrahydrocarbazole Spiropyrazolones via Remote [4 + 2] Annulation of Indole Tethered Enal With Olefinic Pyrazolones

ChemistrySelect, Год журнала: 2025, Номер 10(5)

Опубликована: Фев. 1, 2025

Abstract We present the first application of olefinic pyrazolone in conjunction with indole‐tethered enal an aminocatalytic remote [4 + 2] annulation reaction, successfully yielding tetrahydrocarbazole spiropyrazolone frameworks moderate to good yields, accompanied by significant enantio‐ and diastereoselectivities. The robustness this developed protocol is demonstrated through generation a diverse array 22 examples, all exhibiting consistent yields stereoselectivities. Furthermore, we achieved gram‐scale synthesis synthesized biologically relevant fluorohexahydrofuranocarbazole via two‐pot, three‐step sequence involving 2]‐addition, reduction, fluoroetherification reactions. Finally, propose plausible mechanism, supported SC‐XRD NOE experiments, highlighting crucial aspect research.

Язык: Английский

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Blossoming of Polyenamine Catalysis in Asymmetric Synthesis: Scope and Future Applications

Chemistry - An Asian Journal, Год журнала: 2023, Номер 18(14)

Опубликована: Май 22, 2023

After the emergence of organocatalysis, field asymmetric synthesis has reached an exceptional level in this century. Asymmetric aminocatalysis, among other organocatalytic strategies, proceeded through LUMO-lowering iminium ion and HOMO-raising enamine activation appeared as a powerful synthetic approach for realizing potential chiral building blocks from unmodified carbonyl compounds. Consequently, concept strategy plethora transformations based on enamine, dienamine, most recently trienamine, tetraenamine, pentaenamine catalysis been devised. In mini-review article, we disclosed recent progress accomplished aminocatalysis polyenamine strategies functionalization compounds, covered reports 2014 to till date.

Язык: Английский

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Bromination of indazoles enhanced by organic-dye, visible-light photoredox catalysis

Tetrahedron, Год журнала: 2023, Номер 142, С. 133523 - 133523

Опубликована: Июнь 17, 2023

Язык: Английский

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Photocatalytic activity of Rose Bengal encapsulated in zeolitic imidazolate framework-8 (RB@ZIF-8): an innovative approach for the one pot synthesis of highly functionalized tetrahydropyridines and study of their anti-tubercular activity

Catalysis Science & Technology, Год журнала: 2024, Номер 14(9), С. 2619 - 2629

Опубликована: Янв. 1, 2024

The synthesis of tetrahydropyridine derivatives under visible-light irradiation using a photoactive metal–organic framework and the evaluation their anti-tubercular activities.

Язык: Английский

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A new role for solar energy as a renewable energy source for catalyst-solvent free gram-scale synthesis of pyrano[2,3-d]pyrimidine scaffolds

Research on Chemical Intermediates, Год журнала: 2023, Номер 49(9), С. 3881 - 3891

Опубликована: Июнь 30, 2023

Язык: Английский

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Organocatalyzed cycloaddition of N-2,2,2-trifluoroethylisatin ketimines for synthesis of CF3-containing spirooxindoles

Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 55 - 87

Опубликована: Янв. 1, 2024

Язык: Английский

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Recent strategies in the synthesis of spirooxindole scaffolds (stereoselective synthesis)

Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 239 - 264

Опубликована: Янв. 1, 2024

Язык: Английский

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