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Publications (49)
We are reporting a convenient method for the synthesis of bis(indolyl)methane derivatives from relatively cheap and commercially available chemicals such as indoles and aldehydes in a one‐pot procedure using Ga‐MCM‐41‐SO3H heterogeneous catalyst. Notably, the use of this catalyst has resulted in high yield of products (up to 98 %) under mild condit...
The development of efficient and sustainable chemical processes which use greener reagents and solvents, currently play an important role in current research. Methanol, a cheap and readily available resource from chemical industry, could be activated by transition metal catalysts. This review provides a systematic summary of strategies for methanol...
In a new approach, a series of 3-aroylimidazo[1,2-a]pyridine derivatives were prepared in high yields. This approach revealed the direct Fe-catalyzed functionalization of imidazo[1,2-a]pyridine derivatives with aryl aldehydes via an aerobic oxidative cross-dehydrogenative coupling process. This transformation occurred in the presence of air, and Fe...
In this study, the reactivity ratios of n-butyl acrylate (BA) and methyl methacrylate (MMA) were investigated. The copolymerization reactions were performed in toluene at 70 oC, using azobisisobutyronitrile as the initiator. The composition of the initial monomer mixture and copolymers was easily determined with the help of proton nuclear magnetic...
This research focused on investigating the selective synthesis of licarin A by oxidation of isoeugenol by employing copper (II) ion‐exchanged Y‐zeolite ( x CuY, x = 0.02, 0.05, 0.08 and 0.10) as the catalyst. The x CuY catalyst was synthesized through the capillary impregnation method, enabling the exchange of Cu(II) ions within the porous structur...
Bis(3-indolyl)methanes (BIMs) are known for their important bioactivities, which include anti-cancer, anti-inflammatory, antibacterial, and antioxidant properties. In this study, we are disclosing a metal catalyst-free synthesis of BIMs in high yields via the alkylation reaction of indoles and alcohols in the presence of lithium tert-butoxide base....
The research delineated the utilization of Cu-MOF (HKUST-1) as a proficient heterogeneous catalyst for the selective transformation of isoeugenol to licarin A. The HKUST-1 was synthesized through a straightforward methodology and its structure was confirmed by various characterization employing a range of techniques, including X-ray diffraction (XR...
In order to produce a hydrophobic material for oil removal from surface waters, in this study, the reduced graphene oxide coated PU sponges (rGO@PU) were prepared by ultrasonication of PU sponges with suspension of rGO in ethanol. The chemical structure of the rGO coatings was investigated by X-ray diffraction and FT-IR spectroscopy methods. The su...
In four simple steps, a series of 5H-thiazolo[2’,3’:2,3]imidazo[4,5-b]indole and 11H-benzo[4',5']thiazolo[2',3':2,3]imidazo[4,5-b]indole derivatives were prepared with high yields. The key step in this procedure was demonstrated to be two-fold Cu-catalysed C-N coupling...
Methylene Blue (MB) is a common dye that has various applications in different fields, including medicine, biology, and environmental science. While it can be beneficial in certain contexts, it can also have negative effects on the environment under certain circumstances. In this study, the photodegradation of MB under visible light irradiation usi...
In this study, a series of CuWO4/g-C3N4 composites were synthesized using a facile construction method. The structural characteristics of the composites were examined using various techniques, including XRD, SEM, SEM-EDS, FT-IR, and UV–DRS. The photocatalytic performance of the CuWO4/g-C3N4 nanocomposites was evaluated in the degradation of methyle...
The study described the preparation of composite material through the dispersion of carbon nanotubes (CNTs) decorated with silver nanoparticles (Ag NPs) in the matrix of blending natural rubber (NR) and polyethylene (PE), for use as an antibacterial agent. The FESEM results indicated the uniform and defect-free surface of the synthesized composites...
A series of x%Ag/ZnO (x: 0; 1; 2; 5; 10) nanostructures were successfully synthesized through the facile method. The material's structures were confirmed through X‐ray diffraction, while their morphology, elemental distribution, and components were analyzed using cross‐sectional transmission electron microscopy (XTEM), Field‐emission scanning elect...
Aims:
Synthesis of 1,4-Dihydropyridines (1,4-DHP) using heterogeneous catalyst under mild condition Objective: Our objective is to explore new applications of non-metal heterogeneous catalysts in the synthesis of 1,4-DHP derivatives in a greener and more efficient approach.
Method:
A greener and more efficient method for the synthesis of 1,4-DHP...
The paper reported synthesizing 1,4-dihydropyridine (1,4-DHP) from β-ketoester, aromatic aldehyde, and ammonium acetate via a two-step, using heterogeneous catalyst Amberlyst-15 in high yields at room temperature. The method was applied to synthesize some 1,4-DHP derivatives. Moreover, the catalyst was reused at least five times without loss of cat...
This study reported a new application of CuFe2O4 spinel as an efficient heterogeneous catalyst for the selective oxidation of isoeugenol to licarin A under mild conditions. The CuFe2O4 was prepared via a simple method and characterized by various modern techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispe...
The series x% (wt) Cu2O/g-C3N4 composites were prepared by the conventional impregnation method. These compounds were characterized by different methods such as X-ray Diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR), UV–vis diffuse reflectance spectroscopy (UV-DRS), and Photoluminescence spectroscopy (PL). The results clearly showe...
An efficient and practical method for the synthesis of pyrroles by Cu-catalyzed multicomponent reaction has been described. A range of highly functionalized pyrroles was prepared in good yields under solvent free condition.
Quinoline derivatives are important moieties in bioactive molecules and advanced materials. However, an efficient strategy to synthesize quinoline derivatives remains challenging. Herein, we describe an efficient and practical method for the synthesis of quinolines by Cu‐catalyzed cyclization of 2‐amino benzyl alcohol with ketones (or secondary alc...
The application of Ga-MCM-41-SO3H as a new efficient heterogeneous catalyst for the synthesis of celecoxib and pyrazole derivatives under room temperature is reported. The mesoporous material Ga-MCM-41 was first prepared and then functionalized with the sulfonic acid group by the post-synthetic modification to obtain the final solid acid catalyst....
In the present study, the photocatalytic activity of Ti-SBA-15/C3N4 catalysts was investigated to degrade 2,4-Dichlorophenoxyacetic acid (2,4-D) herbicides in water under visible light irradiation. The catalysts were synthesized via a simple hydrothermal method and characterized by various analytical techniques, including SAXS, N2 adsorption-desorp...
In this study, direct Z–scheme heterostructure CoWO4/g-C3N4 was synthesized by a facile hydrothermal method. The structural, morphological properties of the prepared samples were characterised by XRD, SEM, UV–Vis and PL measurements. The as-obtained heterostructure CoWO4/g-C3N4 exhibited enhanced photocatalytic activities toward the degradation of...
The interzeolite conversion of faujasite (FAU-type) zeolites to chabazite (CHA-type) zeolite in the presence of N,N,N-trimethyladamantammonium and N,N,N-dimethylethylcyclohexylammonium cations was investigated over a large compositional range by carefully controlling the reaction mixture compositions. Highly crystalline CHA zeolites were also obtai...
The present article describes the construction of the organoruthenium complex catalyst within carbon-coated mesoporous silica and its application to a heterogeneous catalyst for hydrosilylation reaction. The carbon-coated mesoporous silica (C-MCM-41) was synthesized by carbonization of 2,3-dihydroxynaphthalene (DN) adsorbed on the surface of mesopo...
Two efficient and practical approaches are reported for the synthesis of β- and γ-carboline derivatives from 3,4-dibromopyridine as a common starting material. The β-carbolines were prepared by site-selective Pd-catalyzed C–C coupling with o-bromophenylboronic acid and subsequent cyclization by double C–N coupling with amines. γ-Carbolines were pre...
An iron-based metal–organic framework, MIL-101(Fe), promotes photocatalytic water oxidation to produce oxygen from aqueous silver nitrate solution under visible-light irradiation. The finely-dispersed iron-oxo clusters embedded as nodes of the porous framework would contribute importantly to the efficient promotion of the reaction as compared to bu...
The present article describes the development of a periodic mesoporous organosilica (PMO)-based bifunctional catalyst that includes both oxidative and base catalytic activities. Periodic mesoporous ethylenesilica (PME) was selected as a catalyst support and modified with ethylenediamine through epoxidation of bridging ethylene moieties and the foll...
A cyclopentadienyl ruthenium(II) complex has been immobilized on MCM-41 modified with aminopropyl group through an amide bond formation reaction. FT-IR and UV-vis spectra show successful immobilization of cyclopentadienyl ruthenium complex onto the mesoporous silica surface by utilizing the amino group as a connector. The coordination state of the...