Papers by mahsa mostafavi
The work describes an efficient one-pot synthesis of 2,4,6-trisubstituted pyridine derivatives th... more The work describes an efficient one-pot synthesis of 2,4,6-trisubstituted pyridine derivatives through a three-component catalytic reaction. The procedure involves mesoporous organic polymer based on calix[4]resorcinarene in and functionalized by N-propyl sulfamic acids a solid acid catalyst. Excellent yields, short reaction times, catalyst reusability, and easy reaction handling under solvent-free and mild acidic conditions are the most important advantages of the present protocol. The acidic catalyst was characterized by a number of spectroscopic methods such as Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy and elemental CHNS analysis.
A novel heterogeneous copper catalyst based on a 3D-network polymer containing pendant amine grou... more A novel heterogeneous copper catalyst based on a 3D-network polymer containing pendant amine groups was synthesized via post-functionalization of the polymeric backbone followed by incorporation of copper(I) ions. Catalytic activity of the newly designed catalyst was tested in a one-pot synthesis of 1,4disubstituted 1,2,3-triazoles by click reactions between primary halides, sodium azide and terminal acetylenes in water under aerobic conditions. It increases the reaction rate many fold when compared with common transition metal catalysts. The synergistic incorporation of the porous matrix and active sites of this new catalyst offered a unique combination for effective catalytic-substrate interactions, which made it a new class of solid-support transition metal catalysts for chemical preparation.
N-propyl sulfamic acid supported nano-catalyst on the basis of calix[4]resorcinarene was prepared... more N-propyl sulfamic acid supported nano-catalyst on the basis of calix[4]resorcinarene was prepared via the efficient and facile reaction of amine functionalized polycalix[4]resorcinarene with chlorosulfonic acid. The achieved catalytic system was characterized using some spectroscopic techniques such as Fourier transform Infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and CHNS elemental analysis. This newly developed acidic catalyst was employed efficiently in a one-pot three-component condensation reaction of aromatic aldehydes, dimedone and phthalhydrazide for the synthesis of 2H-indazolo[2,1-b]phthalazine trione derivatives through an easy and eco-friendly methodology. The catalyst was easily separated from the reaction mixture by simple filtration and the desired products were achieved in good to excellent yields in short reaction times.
Recyclable phase transfer catalysts containing magnetic nanoparticles (MNPs) have been known as a... more Recyclable phase transfer catalysts containing magnetic nanoparticles (MNPs) have been known as a major trend towards sustainable catalysts. In this study, a novel class of magnetic porous polymer on the basis of calix[4]resorcinarene was synthesized starting from silica‐coated Fe3O4 core‐shell nanoparticles. This compound was found as an efficient phase-transfer catalyst to the conversion of benzyl halides into benzyl azides and cyanides in good yields. The catalyst could be used at least for five consecutive cycles without appreciable loss in the catalytic activity.
The new synthesized sulfamic acid functionalized catalyst on the basis of calix[4]resorcinarene c... more The new synthesized sulfamic acid functionalized catalyst on the basis of calix[4]resorcinarene catalyzed successfully and efficiently the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives through a one-pot condensation reaction of β-naphthol with various aryl aldehydes under thermal solvent-free conditions. As the major advantages of the present method, solvent-free and mild acidic conditions, catalyst recyclability, easy purification of the products, high yields along with relatively less reaction times can be mentioned. IR spectroscopy, field emission scanning electron microscopy and transmission electron microscopy are some of the spectroscopic methods used to characterize the new synthesized solid support.
The manuscript reports the synthesis of a polymeric calix[4]resorcinarene catalyst incorporated w... more The manuscript reports the synthesis of a polymeric calix[4]resorcinarene catalyst incorporated with N-propyl sulfamic acid and the catalytic synthesis of 1,8-dioxooctahydroxanthenes by this polymeric catalyst. Highly cross-linked porous organic polymers as a class of amorphous and nano-scale porous polymeric networks have been playing a key role in the development of organic synthesis and catalytic systems. The catalyst synthetic steps include (1) the synthesis of calix[4]resorcinarene, (2) polymerization with formaldehyde, (3) modification with 3-(triethoxysilyl)propylamine (APTES), and finally (4) modification in the presence of chlorosulfonic acid to produce an efficient heterogeneous acidic catalyst for being applied in the condensation reaction of dimedone with divergent aryl aldehydes for synthesizing a series of 1,8-dioxooctahydroxanthenes. This newly synthesized catalyst was characterized by some spectroscopic methods such as Fourier-Transform Infrared spectroscopy (FT-IR), elemental analysis (CHNS), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), gas adsorption/desorption Brunauer-Emmett-Teller (BET) methodology, and thermogravimetric analysis (TGA) and its recyclability was successfully proved. Solvent-free conditions, easy reaction handling and work up, mild acidic conditions, green and affordable methodology, gaining high yields of products in short reaction times, and also the catalyst reusability, are the most important advantages of the present method. POLYM.
![Research paper thumbnail of Reinforced polymeric nanocomposites of the Amino-Decorated Polycalix[4] resorcinarene with graphene oxide and reduced graphene oxide as promising candidates in materials science](https://attachments.academia-assets.com/105680686/thumbnails/1.jpg)
In this paper, the preparation of graphene oxide and reduced graphene oxide nanosheets has been a... more In this paper, the preparation of graphene oxide and reduced graphene oxide nanosheets has been achieved via the modified Hummer method and the surface modification is performed by the reaction of the acylated form of these graphitic nanosheets with amine-functionalized polycalix[4]resorcinarene as a mesoporous polymeric matrix. The as-prepared nanocomposites have been then characterized by Fourier transform infrared spectra (FT-IR), Raman spectra, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and UV/Vis spectrophotometry to assess the control of grafting density along with providing information on their natures and structures. Field Emission Scanning Electron Microscopy (FE-SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) are also applied to detect morphological properties of the obtained products. Taken together, the results reveal the successful preparation of the efficient and wondrous porous nanocomposites with the simultaneously merged reinforced mechanical, electrical and thermal properties of graphitic nanostructures and mesoporous polymeric matrix on the basis of calix[4]resorcinarene.
Kinetics and Catalysis, 2019
The work describes an efficient one-pot synthesis of 2,4,6-trisubstituted pyridine derivatives th... more The work describes an efficient one-pot synthesis of 2,4,6-trisubstituted pyridine derivatives through a three-component catalytic reaction. The procedure involves mesoporous organic polymer based on calix[4]resorcinarene in and functionalized by N-propyl sulfamic acids a solid acid catalyst. Excellent yields, short reaction times, catalyst reusability, and easy reaction handling under solvent-free and mild acidic conditions are the most important advantages of the present protocol. The acidic catalyst was characterized by a number of spectroscopic methods such as Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy and elemental CHNS analysis.
Простой и экологически безопасный каталитический синтез производных 2,4,6-триарилпиридина. Использование модифицированного мезопористого органического полимера на основе каликс[4]резорцинарена в качестве гетерогенного кислотного эффективного и стабильного катализатора
Кинетика и катализ, 2019
RSC Advances, 2016
A novel heterogeneous copper catalyst based on a 3D-network polymer containing pendant amine grou... more A novel heterogeneous copper catalyst based on a 3D-network polymer containing pendant amine groups was synthesized via post-functionalization of the polymeric backbone followed by incorporation of copper(i) ions.
![Research paper thumbnail of Reinforced polymeric nanocomposites of the Amino-Decorated Polycalix[4]resorcinarene with graphene oxide and reduced graphene oxide as promising candidates in materials science](https://a.academia-assets.com/images/blank-paper.jpg)
Reinforced polymeric nanocomposites of the Amino-Decorated Polycalix[4]resorcinarene with graphene oxide and reduced graphene oxide as promising candidates in materials science
Materials Science and Engineering: B, 2021
Abstract In this paper, the preparation of graphene oxide and reduced graphene oxide nanosheets h... more Abstract In this paper, the preparation of graphene oxide and reduced graphene oxide nanosheets has been achieved via the modified Hummer method and the surface modification is performed by the reaction of the acylated form of these graphitic nanosheets with amine-functionalized polycalix[4]resorcinarene as a mesoporous polymeric matrix. The as-prepared nanocomposites have been then characterized by Fourier transform infrared spectra (FT-IR), Raman spectra, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and UV/Vis spectrophotometry to assess the control of grafting density along with providing information on their natures and structures. Field Emission Scanning Electron Microscopy (FE-SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) are also applied to detect morphological properties of the obtained products. Taken together, the results reveal the successful preparation of the efficient and wondrous porous nanocomposites with the simultaneously merged reinforced mechanical, electrical and thermal properties of graphitic nanostructures and mesoporous polymeric matrix on the basis of calix[4]resorcinarene.
Design and synthesis of a new porous organic polymer equipped with N-propyl sulfamic acid functionalities: As an efficient heterogeneous catalyst for the synthesis of 1,8-dioxo-octahydroxanthene derivatives
Polymer Engineering & Science
Sulfamic acid functionalized 3D-network nanoporous polymer based on calix[4]resorcinarene: a recyclable heterogeneous nanocatalyst for the efficient synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under thermal neat conditions
Journal of Inclusion Phenomena and Macrocyclic Chemistry
Design and synthesis of a magnetic hierarchical porous organic polymer: A new platform in heterogeneous phase-transfer catalysis
Applied Organometallic Chemistry
A novel sulfamic acid functionalized nano-catalyst on the basis of calix[4]resorcinarene for the green one-pot synthesis of 2H-indazolo[2,1-b]phthalazine-triones under thermal solvent-free conditions
Reaction Kinetics, Mechanisms and Catalysis
Clinical Biochemistry, 2011
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Papers by mahsa mostafavi