Design and characterization of an urea-bridged PMO supporting Cu(II) nanoparticles as highly efficient heterogeneous catalyst for synthesis of tetrazole derivatives DOI Creative Commons
Ehsan Valiey, Mohammad G. Dekamin

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: Oct. 28, 2022

Abstract In this work, a new periodic mesoporous organosilica with urea-bridges produced by the reaction of (3-aminopropyl)triethoxysilane and toluene-2,4-diisocyanate (APS-TDU-PMO) is introduced. The obtained APS-TDU-PMO was found to be an appropriate support for loading Cu(II) nanoparticles afford supramolecular Cu@APS-TDU-PMO nanocomposite. Uniformity mesoporosity both synthesized nanomaterials including were proved different spectroscopic, microscopic or analytical techniques FTIR, EDX, XRD, FESEM, TEM, BET, TGA DTA. Furthermore, prepared nanomaterial also used, as heterogeneous recyclable catalyst, synthesis tetrazole derivatives through cascade condensation, concerted cycloaddition tautomerization reactions. Indeed, main advantages its simple preparation high catalytic activity well proper surface area which enable it work under solvent-free conditions. Also, introduced catalyst showed good stability reusability six consecutive runs address more green chemistry principles.

Language: Английский

Silica sulfuric acid coated on SnFe2O4MNPs: synthesis, characterization and catalytic applications in the synthesis of polyhydroquinolines DOI Creative Commons

Soheila Esmaili,

Ardeshir Khazaei, Arash Ghorbani‐Choghamarani

et al.

RSC Advances, Journal Year: 2022, Volume and Issue: 12(23), P. 14397 - 14410

Published: Jan. 1, 2022

An efficient and heterogeneous novel magnetic solid sulfuric acid, immobilized on silica functionalized SnFe 2 O 4 , was successfully synthesized, characterized, employed as a recoverable nanocatalyst for the synthesis of biologically active polyhydroquinoline derivatives.

Language: Английский

Citations

30
Construction of Indium(III)–Organic Framework Based on a Flexible Cyclotriphosphazene-Derived Hexacarboxylate as a Reusable Green Catalyst for the Synthesis of Bioactive Aza-Heterocycles DOI

Velusamy Jeevananthan,

Gopal Chandru Senadi,

M. Kesavan

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(12), P. 5446 - 5463

Published: March 8, 2024

The constant demand for eco-friendly methods of synthesizing complex organic compounds inspired researchers to design and develop modern, highly efficient heterogeneous catalytic systems. Herein, In-HCPCP metal–organic framework (SRMIST–1), a Lewis acid catalyst containing less toxic indium robust cyclotriphosphazene exhibiting notable chemical thermal stability, durable activity, exceptional reusability was produced through the reaction between indium(III) nitrate hydrate hexakis(4-carboxylatophenoxy)-cyclotriphosphazene. In SRMIST–1 structure, secondary building units {InO7} are assembled by connection η2- η1-carboxylic oxo atoms from different HCPCP ligands, forming three-dimensional network. occurrence regularly distributed In(III) sites in confers superior reactivity on toward synthesis 2,3-dihydroquinazolin-4(1H)-ones 3,4-dihydro-2H-1,2,4-benzothiadiazine-1,1-dioxides cyclization 2-aminobenzamides 2-aminobenzenesulphonamides with aldehydes under optimized conditions, respectively. features this method include broad functional group compatibility, low loading (1–5 mol %), mild easy workup procedures, good excellent yields, ethanol as green solvent, (five cycles), economic attractiveness, which is mainly due sustainability reusable catalyst. Our findings demonstrate that reactive finds widespread applications medicinal chemistry.

Language: Английский

Citations

7
Magnetic decorated 5-sulfosalicylic acid grafted to chitosan: A solid acid organocatalyst for green synthesis of quinazoline derivatives DOI Creative Commons

Reyhaneh Peyvasteh Sourkouhi,

Mohammad G. Dekamin, Ehsan Valiey

et al.

Carbohydrate Polymer Technologies and Applications, Journal Year: 2024, Volume and Issue: 7, P. 100420 - 100420

Published: Jan. 3, 2024

In this research, a new magnetically decorated multifunctional solid acid was designed and prepared conveniently by grafting of 5-sulfosalicylic (SSA) onto the chitosan (CS) backbone using toluene-2,4-diisocyanate (TDI) linker for first time. The obtained magnetic biopolymeric nanomaterial, CS-TDI-SSA-Fe3O4, properly characterized spectroscopic, microscopic, or analytical methods including FT-IR, EDX, XRD, BET, FESEM, TGA, VSM. supramolecular CS-TDI-SSA-Fe3O4 nanocomposite investigated, as heterogeneous organocatalyst, to promote three-component synthesis 2,3-dihydroquinazoline-4(1H)-one derivatives under green conditions. acidic nanocatalyst demonstrated highly efficient activity wide range quinazoline derivatives, an important pharmaceutical scaffold, through multicomponent strategy. reaction proceeds very well in presence EtOH afford corresponding (DHQ) high excellent yields. key advantages present protocol are use novel, renewable, biopolymeric, biodegradable simple procedure preparation hybrid material. Furthermore, catalyst can be used at least five times DHQ with slight decrease its catalytic activity.

Language: Английский

Citations

6
Sulfamic acid grafted to cross-linked chitosan by dendritic units: a bio-based, highly efficient and heterogeneous organocatalyst for green synthesis of 2,3-dihydroquinazoline derivatives DOI Creative Commons
Ehsan Valiey, Mohammad G. Dekamin, Shirin Bondarian

et al.

RSC Advances, Journal Year: 2022, Volume and Issue: 13(1), P. 320 - 334

Published: Dec. 21, 2022

In this work, novel cross-linked chitosan by the G1 dendrimer from condensation of melamine and toluene-2,4-diisocyante terminated sulfamic acid groups (CS-TDI-Me-TDI-NHSO3H), as a bio-based heterogeneous acidic organocatalyst, was designed prepared. Also, structure prepared organocatalyst characterized Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDS), diffraction (XRD) thermogravimetric analysis/derivative thermogravimetry (TGA/DTA). Subsequently, catalytic performance biobased dendritic CS-TDI-Me-TDI-NHSO3H, multifunctional solid acid, evaluated for preparation 2,3-dihydroquinazoline derivatives through three-component reaction following green chemistry principles. Some advantages new protocol include high to excellent yields short times well easy remarkable catalyst stability introduced organocatalyst. The CS-TDI-Me-TDI-SO3H can be used up five cycles quinazoline with slight decrease in its activity.

Language: Английский

Citations

24
γ‐Fe2O3@Cu3Al‐LDH/HEPES a novel heterogeneous amphoteric catalyst for synthesis of annulated pyrazolo[3,4‐d]pyrimidines DOI
Farzaneh Ghobakhloo, Davood Azarifar, Masoud Mohammadi

et al.

Applied Organometallic Chemistry, Journal Year: 2022, Volume and Issue: 36(10)

Published: July 18, 2022

An efficient synthetic method for the heterogenization of bifunctional zwitterionic HEPES catalyst on LDH modified γ‐Fe 2 O 3 magnetic nanoparticles (MNPs) was developed to create a novel polar catalytic environment tandem catalysis. The efficiency resulted acid/base (γ‐Fe @Cu Al‐LDH/HEPES) investigated in Biginelli‐like synthesis biologically active pyrazolo[3,4‐d]pyrimidines via cyclocondensation 3‐methyl, 1‐phenyl‐H1‐pyrazole‐5‐ol with various aromatic aldehydes and urea derivatives mixture water ethanol (1:1) under reflux conditions. Besides, desired products were reached high conversions powerful reusability. Utilization simple mild reaction conditions, hybrid groups, short time, green safe solvent, performance good recyclability, easy purification products, magnetically work‐up make this methodology an interesting effective option Biginelli reaction.

Language: Английский

Citations

23
Synthesis and Characterization of a Hercynite-Supported Copper(II) Complex Based on 1,10-Phenanthroline-5,6-dione and Acetylacetone Building Blocks and Its Catalytic Application in Annulation Reactions DOI
Masoud Mohammadi, Ghobad Mansouri

Langmuir, Journal Year: 2024, Volume and Issue: 40(43), P. 22773 - 22786

Published: Oct. 18, 2024

In the present work, a novel Cu(II) complex containing 10-phenanthroline-5,6-dione (phen-dione) and acetylacetone (acac) was prepared via solid-phase synthesis on silica-modified hercynite magnetic nanoparticles (MNPs). The resulting structure underwent thorough structural analysis using diverse instrumental techniques. catalytic potential of synthesized successfully demonstrated in 2-amino-3-cyano-4

Language: Английский

Citations

5
NiIINPs entrapped within a matrix ofl-glutamic acid cross-linked chitosan supported on magnetic carboxylic acid-functionalized multi-walled carbon nanotube: a new and efficient multi-task catalytic system for the green one-pot synthesis of diverse heterocyclic frameworks DOI Creative Commons
Morteza Hasanpour Galehban, Behzad Zeynizadeh, Hossein Mousavi

et al.

RSC Advances, Journal Year: 2022, Volume and Issue: 12(26), P. 16454 - 16478

Published: Jan. 1, 2022

In the present study, a new l-glutamic acid cross-linked chitosan supported on magnetic carboxylic acid-functionalized multi-walled carbon nanotube (Fe

Language: Английский

Citations

21
Na2Ca(HPO4)2, an Efficient, Reusable Eco-Friendly Catalyst for the Synthesis of 1,8-Dioxo-Octahydroxanthenes and Biscoumarin Derivatives DOI

Soukaina Chehab,

Youssef Merroun,

Rachida Ghaılane

et al.

Polycyclic aromatic compounds, Journal Year: 2022, Volume and Issue: 43(6), P. 4906 - 4923

Published: July 6, 2022

In this paper, Na2Ca(HPO4)2 was used for the first time as a heterogeneous catalyst efficient and green synthesis of 1,8-dioxo-octahydroxanthenes biscoumarin derivatives. Under optimal conditions, products were obtained with excellent yields in short reaction time. This developed procedure has shown several advantages: avoiding toxic solvents, catalyst, simple handling, mild easy recovery, reuse.Na2Ca(HPO4)2 guarantees an environmentally friendly process; it can be considered alternative to other previously reported methods.

Language: Английский

Citations

21
Introducing Fe3O4@SiO2@KCC-1@MPTMS@CuII catalytic applications for the green one-pot syntheses of 2-aryl(or heteroaryl)-2,3-dihydroquinazolin-4(1H)-ones and 9-aryl-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-diones DOI
Morteza Hasanpour Galehban, Behzad Zeynizadeh, Hossein Mousavi

et al.

Journal of Molecular Structure, Journal Year: 2022, Volume and Issue: 1271, P. 134017 - 134017

Published: Aug. 28, 2022

Language: Английский

Citations

17
Design, preparation and application of the semicarbazide-pyridoyl-sulfonic acid-based nanocatalyst for the synthesis of pyranopyrazoles DOI Creative Commons

Masoumeh Beiranvand,

Davood Habibi

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: Aug. 23, 2022

Abstract A novel, efficient, and recoverable nanomagnetic catalyst bearing the semicarbazide linkers, namely, Fe 3 O 4 @SiO 2 @OSi(CH ) - N (3-pyridoyl sulfonic acid)semicarbazide (FSiPSS) was designed, synthesized characterized by use of various techniques such as FT‐IR, EDX, elemental mapping analysis, XRD, SEM, TEM, TGA/DTA, BET, VSM. Then, catalytic capability novel prepared FSiPSS successfully investigated in synthesis diverse pyranopyrazoles through a one-pot four-component condensation reaction ethyl acetoacetate, hydrazine hydrate, aromatic aldehydes, malononitrile or cyano-acetate help ultrasonication very short time, good to high yields easy work-up (Fig. 1).

Language: Английский

Citations

16