Polyethyleneimine-immobilized CoCl 2 nanoparticles: Synthesis, characterization, application as a new efficient and reusable nanocomposite catalyst for one-step transesterification reaction DOI

Tahereh Darvishi,

Sedigheh Azadi, Nooredin Goudarzian

et al.

Synthetic Communications, Journal Year: 2024, Volume and Issue: 54(8), P. 672 - 693

Published: March 20, 2024

Polyethyleneimine-supported cobalt (II) chloride as a novel polymeric nanocomposite acidic catalyst for the one-stage transesterification reaction of ethyl acetate with various alcohols is reported. The was characterized by Fourier transform infrared spectroscopy, X-ray powder diffraction, transmission electron microscopy, scanning dynamic light scattering technique, and thermal gravimetric analysis. Furthermore, inductively coupled plasma atomic absorption spectroscopy were used to determine quantity Cobalt nanoparticles in catalyst. By adding (0.10 g, 0.20 mol%) n-hexane/chloroform (5.0 cm3) solvent under reflux conditions, studies demonstrated successful reactions excellent yields (80–98%) short times (0.50–1.30 h) using substrates on scale 1.0 mmol. Seven consecutive could be performed without significantly decreasing its activity. most noteworthy aspects this process are low cost, safety, environmental friendliness due catalyst's non-toxicity, straightforward operation, effective outcomes.

Language: Английский

Construction of a Dual-Functionalized Acid–Base Nanocatalyst via HEPES Buffer Functionalized on Fe3O4 as a Reusable Catalyst for Annulation Reactions DOI

Maryam Borzooei,

Masoomeh Norouzi, Masoud Mohammadi

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(26), P. 13397 - 13411

Published: June 20, 2024

Herein, we present a highly efficient dual-functionalized acid–base nanocatalyst, denoted as Fe3O4@GLYMO-HEPES, featuring sulfuric acid and tertiary amines its dual functional components. This catalyst is synthesized through the immobilization of 4-(2-hydroxyethyl)-1-piperazineethanesulfonic (HEPES) source these functionalities onto magnetite (Fe3O4) using 3-glycidoxypropyltriethoxysilane (GLYMO) linker. Characterization studies confirm integrity Fe3O4 core, with GLYMO-HEPES coating exhibiting no phase changes. Furthermore, Fe3O4@GLYMO-HEPES nanoparticles demonstrate uniform size distribution without aggregation. Notably, exhibits remarkable stability up to 200 °C possesses saturation magnetization value 31.5 emu/g, facilitating easy recovery via magnetic separation. These findings underscore potential versatile recyclable nanocatalyst for various applications. Its catalytic ability was evaluated in synthesis pyrano[2,3-c]pyrazoles 2-amino-3-cyano-4H-chromenes tandem Knorr–Knoevenagel–Michael–Thorpe–Ziegler-type heterocyclization mechanism, different aldehydes. A wide range fused heterocycles having good excellent yields. The process cost-effective, safe, sustainable, scalable, can be reused five times. prepared found stable heterogeneous showed recyclability.

Language: Английский

Citations

16
An overview on copper in industrial chemistry: From ancient pigment to modern catalysis DOI
Mohammad Soleiman‐Beigi, Masoud Mohammadi,

Homa Kohzadi

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 529, P. 216438 - 216438

Published: Jan. 17, 2025

Language: Английский

Citations

2
Nanomagnetic tetraaza (N4 donor) macrocyclic Schiff base complex of copper(ii): synthesis, characterizations, and its catalytic application in Click reactions DOI Creative Commons
Masoomeh Norouzi,

Nasim Noormoradi,

Masoud Mohammadi

et al.

Nanoscale Advances, Journal Year: 2023, Volume and Issue: 5(23), P. 6594 - 6605

Published: Jan. 1, 2023

In this research, a novel nanomagnetic tetra-azamacrocyclic Schiff base complex of copper(ii) was produced via post-synthetic surface modification an Fe3O4 by silane-coupling agent that contains acetylacetone functionalities at the end its chain. Moreover, target Cu involves tetradentate ligand obtained from template reaction with o-phenylenediamine and Cu(NO3)2·3H2O. Furthermore, prepared nominated as [Fe3O4@TAM-Schiff-base-Cu(II)]. The Fourier-transform infrared (FT-IR) analysis indicates presence Schiff-base-Cu in catalyst. X-ray spectroscopy (EDS) TGA reveal approximately 6-7% catalyst comprises hydrocarbon moieties. scanning electron microscope (SEM) transmission microscopy (TEM) images demonstrate uniformly shaped particles, nearly spherical nature, sizes ranging 9 to 18 nm. [Fe3O4@TAM-Schiff-base-Cu(II)] applied for click synthesis diverse range 5-substituted-1H-tetrazoles PEG-400 green medium. Regarding electrical properties Cu(ii) complex, tetra-aza (N4 donor) macrocyclic N-rich reasonable - leading excellent capacity catalyze these organic transformations. Finally, high magnetization value (44.92 emu g-1) enables recycling least four times without compromising catalytic efficiency.

Language: Английский

Citations

36
[ZrFe2O4@SiO2–N–(TMSP)–ASP–Pd(0)] Complex: Synthesis, characterizations, and its application as a nanomagnetic catalyst in cross-coupling and click reactions DOI
Masoud Mohammadi, Arash Ghorbani‐Choghamarani,

Sayed Mohammad Ramish

et al.

Journal of Molecular Structure, Journal Year: 2023, Volume and Issue: 1292, P. 136115 - 136115

Published: June 29, 2023

Language: Английский

Citations

27
Palladium immobilized on guanidine functionalized magnetic nanoparticles: a highly effective and recoverable catalyst for ultrasound aided Suzuki–Miyaura cross-coupling reactions DOI
Sumanth Hegde, Aatika Nizam, Ajesh Vijayan

et al.

New Journal of Chemistry, Journal Year: 2023, Volume and Issue: 47(40), P. 18856 - 18864

Published: Jan. 1, 2023

The Fe 3 O 4 @SiO 2 -TCT-Gua-Pd catalyst anchored with guanidine moiety on nanoparticles was synthesised for Suzuki–Miyaura cross coupling reaction.

Language: Английский

Citations

14
Nickel (II) complex supported on amino-functionalized magnetic nanoparticles: A active magnetically recoverable catalyst for the synthesis of esters and thioesters DOI

Chuanyong Yan,

Qing Wei,

Qunyu Chen

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1317, P. 138853 - 138853

Published: June 5, 2024

Language: Английский

Citations

4
Magnetic Nanoparticles‐Supported Synthesis of Pyrazole Scaffolds: A Review DOI
Shubham Sharma,

Suman,

B. S. Kaith

et al.

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(28)

Published: July 22, 2024

Abstract In the present era, concept of green in organic synthesis has a unique and irreplaceable place. Specifically, nanoparticle gained much more attention due to its various properties related chemistry. this context, magnetic been widely used over last one decade. Among compounds, pyrazole scaffolds are recognized as privileged structure it represents promising area for identification lead structures towards discovery new synthetic drug molecules other valuable candidates. Several commercial drugs such Sildenafil, Rimonabant, Celecoxib many compounds biological testing preclinical evaluation, illustrate wide therapeutic spectrum class scaffolds. Accordingly, nanoparticles have an place derivatives is easy methodology chemists. The manuscript assimilation literature pertaining aspects highly diversified pyrazole.

Language: Английский

Citations

4
Green and Sustainable Synthesis of Benzimidazoles Using a Novel Cu (II)‐Schiff Base Complex Anchored to Silica‐Coated Magnetite Nanoparticles DOI
Ebrahim Balali,

Bahareh Zerehsaz

Applied Organometallic Chemistry, Journal Year: 2025, Volume and Issue: 39(5)

Published: April 15, 2025

ABSTRACT A new nanocatalyst, MNPs@AA:Cu, has been developed by immobilizing a Cu (II)‐aminoacetophenone‐Schiff base complex onto the surface of silica‐coated magnetite nanoparticles. The nanocatalyst was prepared using readily available reagents and thoroughly investigated FT‐IR, XRD, TGA, FE‐SEM, EDS, VSM, N 2 adsorption–desorption (BET) techniques. results confirm that MNPs@AA:Cu nanoparticles exhibit uniform size distribution with minimal aggregation demonstrate remarkable stability up to 250°C. Additionally, integrity Fe 3 O 4 core remains intact, coating shows no phase changes. catalytic activity sustainable heterogeneous catalyst evaluated in synthesis various biologically important benzimidazole derivatives from different benzaldehydes o ‐phenylenediamine under conventional heating solvent‐free conditions, resulting good excellent yields desired products. More importantly, catalyst’s magnetic properties enable it be easily recovered an external magnet reused six times without any significant decrease its or leaching copper.

Language: Английский

Citations

0
Green synthesis of quinazoline derivatives using a novel recyclable nano-catalyst of magnetic modified graphene oxide supported with copper DOI Creative Commons

Sarieh Momeni,

Ramin Ghorbani‐Vaghei

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Nov. 28, 2023

Abstract A new magnetic nano-catalyst system based on graphene oxide was designed and manufactured (GO@Fe 3 O 4 @3-chloropropyltrimethoxysilane@(Z)- N' -(2-hydroxybenzylidene)-4-(pyridin-4-yl)benzohydrazide@Cu(II)), it checked confirmed by various analyzes such as FTIR, XRD, EDX, MAPPING, TGA/DSC, VSM FESEM. This used in the three-component one-pot synthesis of quinazoline derivatives. The products were obtained using this efficient catalyst with high efficiency short time solvent-free conditions. Easy separation acceptable recyclability are other advantages nano-catalyst. Also, can be recycled times without a significant change its efficiency.

Language: Английский

Citations

9
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

et al.

Synthetic Communications, Journal Year: 2023, Volume and Issue: 53(18), P. 1469 - 1505

Published: June 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.

Language: Английский

Citations

8