Papers by Masoud Nasr-Esfahani
Journal of The Iranian Chemical Society, Sep 27, 2016
biological properties of the ligand and its complexes were examined against some Gram-negative an... more biological properties of the ligand and its complexes were examined against some Gram-negative and Gram-positive bacteria and also against 2 fungi. Finally, the interaction of the ligand and its complexes with DNA was investigated by electrophoresis method.
ChemInform, Jan 10, 2006
ABSTRACT
Applied Organometallic Chemistry, Jul 21, 2019
In this study, an efficient and green procedure is explained for the preparation of 1‐amidoalkyl‐... more In this study, an efficient and green procedure is explained for the preparation of 1‐amidoalkyl‐2‐naphthols applying one‐pot condensation reaction of 2‐naphthol, amide and aromatic nanoparticles (Fe3O4@SiO2@IL‐PVP) as a novel solid acid catalyst under solvent‐free conditions. The remarkable features of this method are short reaction time, high conversions, and high yield of product, easy workup procedures and solvent‐free conditions. The Fe3O4@SiO2@IL‐PVP catalyst was characterized via Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffraction patterns (XRD), scanning electron microscopy (SEM), Transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), vibrating sample magnetometer (VSM), and energy‐dispersive X‐ray spectroscopy (EDS). Also, nanocatalysts could be easily recovered by a simple magnet and reused for the next reactions without significant loss of its catalytic activity.
Journal of The Chinese Chemical Society, Oct 25, 2016
Nanorod vanadatesulfuric acid (VSA NRs), as a recyclable and ecologically benign catalyst, was us... more Nanorod vanadatesulfuric acid (VSA NRs), as a recyclable and ecologically benign catalyst, was used for the one-pot synthesis of chalcones and 1,3,5-triaryl-2-pyrazolines (TAPs). Chalcones were prepared via the condensation of substituted acetophenones with aryl-aldehydes under solvent-free conditions. Subsequently, the synthesized chalcones were used for the catalytic synthesis of TAPs via two-component condensation with phenyl hydrazine in refluxing ethanol. VSA is easily prepared by a simple reaction of chlorosulfonic acid and sodium metavanadate of high purity. Compared to conventional procedures, the present protocol offers several advantages such as simplicity of the procedure, appropriate reaction times, high to excellent yields, easily work-up, recoverability, and reusability of the catalyst, and simple purification of the products.
Synthetic Communications, Oct 7, 2009
Efficient and rapid oxidation of Hantzsch 1,4-dihydropyridine with tetrabutylammonium peroxomonos... more Efficient and rapid oxidation of Hantzsch 1,4-dihydropyridine with tetrabutylammonium peroxomonosulfate (TBAO) is reported. The Mn(salophen)/monopersulfate catalytic system efficiently converts 1,4-dihydropyridines (DHPs) to their corresponding pyridine derivatives under ...
Journal of Molecular Structure-theochem, Oct 1, 2007
Computational calculations at B3LYP/6-31++G(d,p) level were employed in the study of the predomin... more Computational calculations at B3LYP/6-31++G(d,p) level were employed in the study of the predominant tautomeric forms of 1-H and 2-H tetrazole derivatives (5-NO 2 , 5-CF 3 , 5-F, 5-H, 5-NH 2 , 5-OH, 5-CH 3 ) in the gas phase and solution using PCM model. For electron withdrawing ...
Russian Journal of Organic Chemistry, Dec 1, 2022
Chemical Papers, 2015
Pyridine derivatives R 0380 Multicomponent Synthesis of Highly Substituted 2-Pyridones.-An effici... more Pyridine derivatives R 0380 Multicomponent Synthesis of Highly Substituted 2-Pyridones.-An efficient two-step synthesis of highly functionalized 2-pyridones (VI) involves an Ugi four-component condensation of chromones (I) with a diversity of arylamines (II), isonitriles (III) and cyanoacetic acid (IV) as key step. The chromone moiety in compound (V) is cleaved under basic conditions to close the pyridone ring (VI).
ChemistrySelect, May 4, 2023
Synthesis and Reactivity in Inorganic Metal-organic and Nano-metal Chemistry, May 27, 2015
Bulletin of The Korean Chemical Society, Sep 20, 2005
Applied Organometallic Chemistry, Dec 28, 2019
Environment Protection Engineering, 2012
Photocatalytic degradation of an organic dye, emerald green, on nano titanium dioxide (anatase 99... more Photocatalytic degradation of an organic dye, emerald green, on nano titanium dioxide (anatase 99.5%) at basic buffer pH of 7, 8 and 9 has been investigated. The effects of various operating parameters such as initial concentration of dye, catalyst dosage, bufferic pH and irradiation time on photocatalytic degradation have been studied in a photoreactor cell containing high pressure mercury lamp to obtain the optimum conditions. COD removal was found to be 65-71% confirming considerable mineralization. The photodegradation of the dye obeyed a pseudo-first order kinetics according to the Langmuir-Hinshelwood model at all used buffer pH. The observed rate constants (k obs) of photocatalytic degradation were 3.3 × 10-2 min-1 , 7.09 × 10-2 min-1 and 1.32 × 10-1 min-1 at buffer pH of 7-9 respectively. Furthermore, the Langmuir-Hinshelwood rate constants, k r and adsorption constants, K A are reported for current process at various buffer pH.
Journal of Cluster Science
Polyhedron, 2020
Synthesis and characterization of copper (II)-poly(acrylic acid)/M-MCM-41 nanocomposite as a nove... more Synthesis and characterization of copper (II)-poly(acrylic acid)/M-MCM-41 nanocomposite as a novel mesoporous solid acid catalyst for the one-pot synthesis of polyhydroquinoline derivatives
Synthetic Communications, 2017
Chemicals and reagents were purchased from Merck, Fluka, and Aldrich chemical companies and were ... more Chemicals and reagents were purchased from Merck, Fluka, and Aldrich chemical companies and were used without further purification. IR spectra were recorded applying a FT-IR JASCO-680 spectrophotometer in KBr with absorptions in cm-1. The 1 H NMR (400 MHz) and 13 C NMR (100 MHz) spectra were recorded on a Bruker 400 MHz Ultrashield spectrometer in DMSO-d6 solution with TMS as an internal standard. Mass spectra were recorded by the Fisons Trio 1000 (70 ev). All melting points were measured on a Barnstead Electrothermal (BI 9300) apparatus in open capillary tubes and all are uncorrected. The progress monitoring of the reaction was conducted by thin layer chromatography (TLC) using E-Merck silica gel 60 F254 pre-coated plates. The procedure for the synthesis of 2-(2-aminophenyl)(hydroxy)methylene)malononitrile
An efficient Hantzsch synthesis of various substituted 1,4-dihydropyridines from an aldehyde, a β... more An efficient Hantzsch synthesis of various substituted 1,4-dihydropyridines from an aldehyde, a β-dicarbonyl compound and ammonium acetate using p-toluenesulfonic acid in a solvent-free condition in the absence of any other co-catalyst is described. The process is simple and environmentally benign and the catalyst is commercially available and inexpensive. This method has the advantages of excellent yield (80-96%) and short reaction time (5-20 min.). Irradiation of a typical 1,4-dihydropyridine leads to the corresponding pyridine.
dihydropyridines with sodium periodate catalyzed by a new polystyrene-bound manganese porphyrin M... more dihydropyridines with sodium periodate catalyzed by a new polystyrene-bound manganese porphyrin Majid Moghadam, Masoud Nasr-Esfahani, Shahram Tangestaninejad,
Journal of the Iranian Chemical Society, 2016
Tungstophosphoric acid nanoparticles supported on polyamic acid (TPA NPs/PAA) was prepared and em... more Tungstophosphoric acid nanoparticles supported on polyamic acid (TPA NPs/PAA) was prepared and employed as a catalyst for the facile selective synthesis of 1,8-dioxo-decahydroacridines and some bulky bis(1,8-dioxo-decahydroacridine)s via one-pot condensation of 5,5-dimethyl-1,3-cyclohexanedione and various aldehydes with aniline or ammonium acetate in ethanol–water solution. This catalyst was characterized by FT-IR, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), thermogravimetric analysis (TG), energy-dispersive X-ray analysis (EDAX), and inductively coupled plasma optical emission spectrometry (ICP-OES). The catalyst showed high thermal stability and good reusability. The products were isolated in high purity and the catalyst was easily separated in a simple workup and recycled several times without noticeable loss of activity under the described reaction conditions. The reaction is characterized by short reaction time, high efficiency, and mild reaction conditions.
Phosphorus, Sulfur, and Silicon and the Related Elements, 2016
ABSTRACT A series of 1,8-dioxooctahydroxanthene derivatives and some crowded bis(1,8-dioxooctahdr... more ABSTRACT A series of 1,8-dioxooctahydroxanthene derivatives and some crowded bis(1,8-dioxooctahdroxanthene) were selectively synthesized using tungstophosphoric acid nanoparticles supported on polyamic acid (TPA/PAA) as a new catalyst in solvent-free conditions. The high purity products were isolated and catalyst was easily separated in simple work-up and was recycled several times without loss of reactivity under the described reaction conditions. The reaction is characterized by short reaction time, high efficiency and environmentally friendly reaction conditions. GRAPHICAL ABSTRACT
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Papers by Masoud Nasr-Esfahani