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

и другие.

Synthetic Communications, Год журнала: 2024, Номер 54(8), С. 672 - 693

Опубликована: Март 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.

Язык: 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

и другие.

Langmuir, Год журнала: 2024, Номер 40(26), С. 13397 - 13411

Опубликована: Июнь 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.

Язык: Английский

Процитировано

19
An overview on copper in industrial chemistry: From ancient pigment to modern catalysis DOI
Mohammad Soleiman‐Beigi, Masoud Mohammadi,

Homa Kohzadi

и другие.

Coordination Chemistry Reviews, Год журнала: 2025, Номер 529, С. 216438 - 216438

Опубликована: Янв. 17, 2025

Язык: Английский

Процитировано

10
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

и другие.

Nanoscale Advances, Год журнала: 2023, Номер 5(23), С. 6594 - 6605

Опубликована: Янв. 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.

Язык: Английский

Процитировано

38
[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

и другие.

Journal of Molecular Structure, Год журнала: 2023, Номер 1292, С. 136115 - 136115

Опубликована: Июнь 29, 2023

Язык: Английский

Процитировано

30
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

и другие.

New Journal of Chemistry, Год журнала: 2023, Номер 47(40), С. 18856 - 18864

Опубликована: Янв. 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.

Язык: Английский

Процитировано

14
Magnetic Nanoparticles‐Supported Synthesis of Pyrazole Scaffolds: A Review DOI
Shubham Sharma,

Suman,

B. S. Kaith

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(28)

Опубликована: Июль 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.

Язык: Английский

Процитировано

5
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

и другие.

Journal of Molecular Structure, Год журнала: 2024, Номер 1317, С. 138853 - 138853

Опубликована: Июнь 5, 2024

Язык: Английский

Процитировано

4
Magnetic nanoparticles modified with a copper(i) complex as a novel and efficient reusable catalyst for A3coupling leading to C–N bond formation DOI Creative Commons
Wei Li, Jinlong Yan,

Wenjing Xu

и другие.

RSC Advances, Год журнала: 2023, Номер 13(41), С. 28964 - 28974

Опубликована: Янв. 1, 2023

In this work a novel nanomagnetic copper complex was employed in one-pot multicomponent A 3 coupling reactions of aldehydes, amines, and alkynes as efficient catalyst for preparing propargylamines.

Язык: Английский

Процитировано

9
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, Год журнала: 2023, Номер 13(1)

Опубликована: Ноя. 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.

Язык: Английский

Процитировано

9
Synthesis of benzo[b]pyran, 3,4 dihydropyrano[c]chromene and their new furan derivatives using Cu(II) complex of tetradentate Schiff‐base supported on silica as a nanocatalyst DOI
Hashem Sharghi, Elahe Mashhadi,

Seyyede Faeze Razavi

и другие.

Journal of Heterocyclic Chemistry, Год журнала: 2024, Номер 61(5), С. 693 - 702

Опубликована: Фев. 20, 2024

Abstract Cu(II) Complex of tetradentate Schiff‐base supported on silica [Cu(II) Schiff‐base@‐SiO 2 ] catalyzed reactions aryl aldehydes with carbonyl compounds (dimedon/4‐hydroxy coumarin/1,3‐cyclohexadion) and malononitrile in aqueous media (H O:EtOH) to preparation benzo[ b ]pyrans 3,4‐dihydropyrano[ c ]chromanes. Also, using this nanocatalyst, 2‐(5‐substituted phenyl)furan‐2‐carboxaldehyde derivatives gave novel tetrahydrobenzo[ ]pyran ]chromane high yields H O:EtOH under reflux conditions. The key advantages catalytic systems are the formation products, (78%–93%), short reaction time, broad substrate scope, environmentally friendly conditions also, without need column chromatography for purification. Furthermore, nanocatalyst can be reused six times losing activity.

Язык: Английский

Процитировано

3