Polyoxometalate on functionalized graphene sheets as a hybrid catalyst for efficient synthesis of benzimidazoles DOI Creative Commons

Soghra Hossinimotlagh,

Ali Zarnegaryan,

Zahra Dehbanipour

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 6, 2025

In this work, graphene oxide (GO) nanoparticles were synthesized and subsequently modified using 3-aminopropyltrimethoxysilane (APTMS). An Anderson-type polyoxometalate [(C4H9)4N]2[CrMo6O18(OH)6] was then immobilized on the surface of nanoparticles. The obtained catalyst characterized Fourier-transform infrared spectroscopy (FT-IR), energy-dispersive X-ray (EDS), inductively coupled plasma (ICP), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), Raman spectroscopy, diffraction (XRD). catalytic performance recyclable hybrid evaluated for synthesis benzimidazole derivatives at 75 °C under solvent-based conditions. demonstrated easy separation could be successfully reused least six times with only a slight reduction in yield desired product. Leaching recovery tests, along FT-IR analysis, confirmed high stability catalytically active species heterogeneous nature catalyst.

Language: Английский

Synthesis and characterization of a new Schiff-base complex of copper on magnetic MCM-41 nanoparticles as efficient and reusable nanocatalyst in the synthesis of tetrazoles DOI
Mohsen Nikoorazm, Bahman Tahmasbi,

Shahab Gholami

et al.

Polyhedron, Journal Year: 2023, Volume and Issue: 244, P. 116587 - 116587

Published: Aug. 12, 2023

Language: Английский

Citations

46
A new Schiff‐base complex of palladium nanoparticles on modified boehmite with di(pyridin‐2‐yl)methanone as a robust, reusable, and selective nanocatalyst in the C‐C coupling reaction DOI
Bahman Tahmasbi,

Mitra Darabi,

Mohsen Nikoorazm

et al.

Applied Organometallic Chemistry, Journal Year: 2024, Volume and Issue: 38(3)

Published: Jan. 4, 2024

Boehmite is one of the stable phases alumina that easily available, and it also has a variety applications. Therefore in this work, for preparation AlOOH, Sodium hydroxide (NaOH) solutions was added to aluminum nitrate nonahydrate (Al(NO 3 ) .9H 2 O) solution. Then, surface AlOOH modified with (3‐aminopropyl)triethoxysilane (APTES), due high condensation hydroxyl groups on its surface. di(pyridin‐2‐yl)methanone (di(PM)) immobilized toward synthesis Schiff‐base (di(PM)@AlOOH) as heterogeneous ligand. Finally, palladium complex (Pd‐di(PM)@AlOOH) reusable, practical, novel nanocatalyst. Pd‐di(PM)@AlOOH characterized by thermogravimetric analysis (TGA) analysis, Fourier‐transform infrared spectroscopy (FT‐IR), transmission electron microscopy (TEM), scanning microscope (SEM) imaging, energy‐dispersive X‐ray (EDS) wavelength‐dispersive (WDX) inductively coupled plasma (ICP) analysis. After characterization Pd‐di(PM)@AlOOH, performance used highly stable, retrievable, hybrid organic–inorganic catalyst C‐C coupling Suzuki reaction. The hot filtration study revealed acts heterogeneously We found can be recycled five runs without leaching, studied test ICP

Language: Английский

Citations

17
A New Neodymium Complex on Boehmite Nanoparticles with 1,3‐Bis(pyridine‐3‐ylmethyl)thiourea as a Practical and Reusable Nanocatalyst for the Chemoselective Synthesis of Tetrazoles DOI
Yunes Abbasi Tyula, Parisa Moradi, Mohsen Nikoorazm

et al.

ChemistrySelect, Journal Year: 2023, Volume and Issue: 8(24)

Published: June 22, 2023

Abstract In first part, boehmite nanoparticles were synthesized using aqueous solutions of NaOH and Al(NO 3 ) ⋅ 9H 2 O. Then, it surface was modified by 3‐choloropropyltrimtoxysilane, further 1,3‐bis(pyridin‐3‐ylmethyl)thiourea anchored on the nanoparticles. final step, a neodymium complex stabilized its (Nd‐bis(PYT)@boehmite NPs). The obtained characterized TGA, BET, ICP, EDS, WDX, SEM, XRD techniques. second Nd‐bis(PYT)@boehmite NPs employed as an efficient, recoverable, organic‐inorganic hybrid nanocatalyst in homo‐selective synthesis tetrazole compounds. chemoselectivity studied [3+2] cycloaddition phthalonitrile sodium azide (NaN ). This catalyst is stable has heterogeneous nature therefore can be recovered used again for several consecutively run without any re‐activation

Language: Английский

Citations

27
Homoselective synthesis of tetrazole derivatives using copper complex anchored on mesoporous KIT‐6 as a reusable, highly efficient, and environmentally green nanocatalyst DOI

Mitra Darabi,

Mohsen Nikoorazm, Bahman Tahmasbi

et al.

Applied Organometallic Chemistry, Journal Year: 2024, Volume and Issue: 38(4)

Published: Feb. 18, 2024

In this article, the mesoporous silica framework of KIT‐6 was synthesized and, then its surface modified using 3‐aminopropyltrimethoxysilane (APTMS). The new KIT‐6@DABP@Cu nanocatalyst prepared by anchoring copper complex on KIT‐6. identified several techniques, including FT‐IR, WDX, AAS, SEM, TGA, XRD, EDS, and BET. physical properties, such as size, shape, morphology were studied SEM analysis. elemental composition described wavelength dispersive X‐ray spectroscopy (WDX) EDS. FT‐IR used to characterize functional groups in structure nanoparticles. stability TGA at high temperatures. Also, area, total volume, average diameter pores determined Brunauer–Emmett–Teller (BET) catalyst found be a new, highly effective, green for synthesizing 5‐substituted‐tetrazoles nitriles sodium azide (NaN 3 ) catalyzed polyethyleneglycol‐400 (PEG‐400) solvent. This heterogeneous showed good recyclability up five consecutive cycles without notable loss catalytic efficiency.

Language: Английский

Citations

14
A novel recyclable hydrolyzed nanomagnetic copolymer catalyst for green, and one-pot synthesis of tetrahydrobenzo[b]pyrans DOI Creative Commons
Behrooz Maleki,

Samaneh Sedigh Ashrafi,

Pouya Ghamari Kargar

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Dec. 28, 2024

Language: Английский

Citations

13
Multidentate copper complex on magnetic biochar nanoparticles as a practical and recoverable nanocatalyst for the selective synthesis of tetrazole derivatives DOI Creative Commons

Marwan Majeed Maseer,

Tavan Kikhavani, Bahman Tahmasbi

et al.

Nanoscale Advances, Journal Year: 2024, Volume and Issue: 6(15), P. 3948 - 3960

Published: Jan. 1, 2024

Waste recycling, novel and easy methods of recycling catalysts, use green solvents, selective catalysts preventing the production by-products are most important principles chemistry modern technology. Therefore, in this work, biochar nanoparticles (B-NPs) were synthesized by pyrolysis chicken manure as a method for waste recycling. Subsequently, B-NPs magnetized Fe(0) to improve recovery biochar. Then, surface magnetic (FeB-MNPs) was modified (3-chloropropyl)trimethoxysilane (3Cl-PTMS). Finally, multidentate copper complex 2,2'-(propane-1,3-diylbis(oxy))dianiline (P.bis(OA)) immobilized on FeB-MNPs, which labeled Cu-P.bis(OA)@FeB-MNPs. Cu-P.bis(OA)@FeB-MNPs investigated commercial, homoselective, practical, recyclable nanocatalyst synthesis 5-substituted-1

Language: Английский

Citations

12
A comparative study for the efficiency of Pd (II) and Fe (III) complexes as efficient catalysts for synthesis of dihydro‐7H‐5‐thia‐hexaaza‐s‐indacen‐6‐one derivatives supported with DFT approach DOI
Mahmoud Abd El Aleem Ali Ali El‐Remaily,

Thomas Nady A. Eskander,

Omar M. Elhady

et al.

Applied Organometallic Chemistry, Journal Year: 2024, Volume and Issue: 38(11)

Published: Aug. 4, 2024

Two novel complexes were synthesized by the reaction of benzothiazol‐pyrimidin‐2‐ylidene ligand (BTP) with Pd (II) and Fe (III) ions. A variety various spectral analytical methods (infrared, 1 H/NMR, 13 C/NMR, electronic spectra, CHN analyses, mass thermogravimetric analysis, magnetic susceptibility) used to characterize investigated BTP its complexes. Correlation experimental results density functional theory calculation proves that geometry BTP‐Fe complex is octahedral, whereas BTP‐Pd square planner. The catalytic effectiveness tested for three‐component condensation process under moderate environmentally friendly conditions. Moreover, effects different Lewis acid, basic, ionic liquid catalysts, as well solvent catalyst dose on investigated. Both catalysts demonstrated strong capability in carefully regulated ideal circumstances. Heterogeneous exhibited superior performance compared homogeneous BTP‐Fe. All products obtained high TOF (turnover frequency) numbers presence these which indicate efficiency synthesis dihydro‐7H‐5‐thia‐hexaaza‐s‐indacen‐6‐one derivatives. two catalysts' recycling reusability reactions also could be reused up seven times efficiency, but (BTP‐Fe) only recycled four times. Furthermore, mechanism was suggested supported DFT calculation. simplicity, safety, stability, use commercially available quick times, excellent yields make it promising future industrial use.

Language: Английский

Citations

10
Influence of sulphonation on Al-MCM-41 catalyst for effective bio-glycerol conversion to Solketal DOI

Balakrishna Matkala,

Sasikumar Boggala,

Basavaraju Srinivas

et al.

Microporous and Mesoporous Materials, Journal Year: 2023, Volume and Issue: 363, P. 112830 - 112830

Published: Sept. 21, 2023

Language: Английский

Citations

19
Green Methodologies for Tetrazole Synthesis from Different Starting Materials: A Recent Update DOI
Shivangi Jaiswal, Jaya Dwivedi,

Dharma Kishore

et al.

Current Organic Chemistry, Journal Year: 2024, Volume and Issue: 28(2), P. 134 - 160

Published: Jan. 1, 2024

Abstract: Tetrazole is a most versatile pharmacophore of which more than twenty FDAapproved drugs have been marketed globally for the management various diseases. In spite many remarkable and consistent efforts having made by chemists towards development greener sustainable strategies synthesis tetrazole derivatives, this approach still needs attention. The present review focuses on green synthetic preparation derivatives from different starting materials such as nitrile, isonitrile, carbonyl, amine, amide, oxime terminal alkyne functions. mechanism substrates discussed. addition to this, four component Ugi-azide reaction also described. Of note, articles exploited several water-mediated solvent-free methodologies synthesis. important key features were pinpointing in each scheme provides excellent guide those searching selective procedure achieve desired transformation. This seeks timely account (2011-2023) splendid array ecofriendly procedures known today materials. rational enlighten recent advancements substrates.

Language: Английский

Citations

8
Discovery of Pyrano[2,3-c]pyrazole Derivatives as Novel Potential Human Coronavirus Inhibitors: Design, Synthesis, In Silico, In Vitro, and ADME Studies DOI Creative Commons
Abdou K. Allayeh,

Aliaa H. El-boghdady,

Mohamed A. Said

et al.

Pharmaceuticals, Journal Year: 2024, Volume and Issue: 17(2), P. 198 - 198

Published: Feb. 2, 2024

The SARS-CoV-2 pandemic at the end of 2019 had major worldwide health and economic consequences. Until effective vaccination approaches were created, healthcare sectors endured a shortage operative treatments that might prevent infection’s spread. As result, academia pharmaceutical industry prioritized development SARS-CoV2 antiviral medication. Pyranopyrazoles have been shown to play prominent function in chemistry drug sighting because their significant bioactive properties. We provide herein novel sequence pyranopyrazoles annulated systems whose efficacy cytotoxicity explored versus human coronavirus 229E (HCoV-229E) Vero-E6 cell lines as model for Coronaviridae family. Fifteen synthetic congeners pointed out miscellaneous efficacies against HCoV-229E with variable inhibition degrees. Compound 18 showed high selectivity index (SI = 12.6) established spectacular inhibitory capacity 229E. Compounds 6, 7, 14 exposed moderate efficacies. 14, exhibited substantial action through replication phase reduction percentages extending from 53.6%, 60.7%, 55% 82.2%, correspondingly. Likewise, when assessed positive control tipranavir (88.6%), efficiency compounds Mpro provided 80.4%, 73.1%, 81.4% up 84.5%, respectively. In silico studies performed investigate further biological activity target compounds’ physical chemical features, including molecular dynamic (MD) simulations, protein–ligand docking, ADME studies, density functional theory (DFT) calculations. These inquiries demonstrated this series metabolically stable are inhibitors inhibit viral protein may emerged COVID-19 curative option.

Language: Английский

Citations

6