2024-03-19T11:55:49Z
https://icc.journals.pnu.ac.ir/?_action=export&rf=summon&issue=914
Iranian chemical communication
2423-4958
2423-4958
2019
7
Issue 3, pp. 160-229, Serial No. 24
N1,N1,N2,N2-Tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride as a highly efficient catalyst for synthesis of some nitrogen- and oxygen-containing heterocyclic compounds
Maryam
Dashtizadeh
Maryam
Khalili
Fatemeh
Reghbat
Eshagh
Abdi
Zahra
Bahadori
Zahra
Sadripour
Abdolkarim
Zare
Khadijeh
Didehban
Seyed Sajad
Sajadikhah
In this research, a Brønsted acidic ionic liquid namely N1,N1,N2,N2-tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride {[TMBSED][Cl]2} was employed as a highly efficient catalyst for the solvent-free production of some nitrogen- and oxygen-containing heterocyclic compounds including: (i) polyhydroquinolines (from arylaldehydes, dimedone, β-ketoesters and ammonium acetate), (ii) 3,4-dihydropyrimidin-2-(1H)-ones/thiones (from arylaldehydes, β-ketoesters and urea/thiourea), and (iii) 14-aryl-14H-dibenzo[a,j]xanthenes (from aromatic aldehydes and β-naphthol). In all cases, the heterocycles were obtained in high yields and in short reaction times. The salient features of using [TMBSED][Cl]2 in the reactions, include effectiveness, generality, simple preparation of the catalyst from inexpensive and easy available reactants, achieving the reactions under solvent-free conditions, synthesis of the products with high yields in short reaction times and need to milder conditions compared with many reported methods for the preparation of the aforesaid organic compounds.
[TMBSED][Cl]2
polyhydroquinoline
dihydropyrimidin-2-(1H)-one
3,4-dihydropyrimidin-2-(1H)-thione
14-aryl-14H-dibenzoxanthene
2019
07
01
160
173
https://icc.journals.pnu.ac.ir/article_5314_c0f3be86337b384294cfed597775d513.pdf
Iranian chemical communication
2423-4958
2423-4958
2019
7
Issue 3, pp. 160-229, Serial No. 24
Nanomagnetic organic-inorganic hybrid (CuFe2O4@Si-Imid-PMo): an efficient green catalyst for the synthesis of 2,4,5-trisubstituted imidazoles
Ebrahim
Teymoori
Abolghasem
Davoodnia
Amir
Khojastehnezhad
Nasrinsadat
Hosseininasab
In this research, a new magnetic nanocatalyst CuFe2O4@Si-Imid-PMo containing acidic ionic liquid based on imidazolium cation and phosphomolybdic acid anion immobilized on CuFe2O4@SiO2 magnetic nanoparticles was prepared and characterized using FT-IR, EDX, SEM, and VSM techniques. Then, the catalytic activity of CuFe2O4@Si-Imid-PMo was evaluated in the synthesis of 2,4,5-trisubstituted imidazoles. The results showed that the catalyst has high activity and the desired products were obtained in high yields within short reaction times. The best result was obtained at 120 °C in the presence of 0.02 g of the catalyst under solvent-free conditions. The catalyst was also readily recovered by a external magnetic and can be used for several times without substantial reduction in its catalytic activity.
CuFe2O4@Si-Imid-PMo
immobilized ionic liquid
Magnetic nanoparticles
magnetically separable
imidazoles
2019
07
01
174
185
https://icc.journals.pnu.ac.ir/article_5315_f55cb807c9715e07db42c0e67061b5e9.pdf
Iranian chemical communication
2423-4958
2423-4958
2019
7
Issue 3, pp. 160-229, Serial No. 24
Alumina nanoparticles modified carbon paste electrode as a new voltammetric sensor for determination of dopamine
Roghiyeh
Pourghobadi
Mohammad Reza
Baezzat
The present study examines a new dopamine sensor based on Alumina nanoparticles modified carbon paste electrode (Al2O3NPsCPE). Moreover, the present study focuses on the electrochemical act of the Al2O3NPsCPE for the detection of dopamine by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). There is also a focus on the specification of the prepared modified electrode by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM), and there is a discussion on the influence of some experimental variables such as carbon paste composition, laboring solution pH, scan rate and possible interferences. The present study obtained a well-defined redox peak of dopamine (DA) on the Nano- Alumina/CPE at Epa=173mV and Epc=112mV, respectively. The obtained response of the sensor was linear under the optimal conditions of the catalytic peak current, in the range of 8.0-330.0 µM, and the detection limit was 2.1 µM (S/N=3) for dopamine. The proposed sensor exhibited a high sensitivity, an excellent reproducibility, good selectivity, and it was successfully used in the determination of dopamine injection samples.
Alumina nanoparticles
Al2O3NPsCPE
dopamine
cyclic voltammetry
Differential pulse voltammetry
2019
07
01
186
195
https://icc.journals.pnu.ac.ir/article_4143_758e427d228843f06d7120e9d8e21359.pdf
Iranian chemical communication
2423-4958
2423-4958
2019
7
Issue 3, pp. 160-229, Serial No. 24
Preparation and evaluation of some newly liquid crystal as antioxidant for base stocks
Ashraf
Ashmawy
Maher
Nessim
Doaa
Osman
El Sayed
Elnaggar
Four liquid crystal compounds of the form, 2-Sec-butyl-4-[(4-x-phenyl) diazenyl) phenyl-4-(octadecyloxy] benzoate symbolized as I18a, I18b, I18c and I18d were prepared in which the substituent (X) was taken CH3O-, CH3-, Br- and -NO2 respectively. Characterization of prepared compounds is done using FT-IR, 1H-NMR, Mass Spectroscopy and Elemental Analysis.. Their mesophase behavior was investigated by Differential Scanning Calorimetry (DSC). Their antioxidant efficiency for Egyptian lubricating base oil was tested. The oxidation processes was monitored using the change in the Total Acid Number (TAN). The obtained results showed that, the efficiency of these compounds was ranked as follows I18d > I18c > I18b > I18a.
liquid crystals
lubricating oil
TAN
antioxidants and DSC
2019
07
01
196
205
https://icc.journals.pnu.ac.ir/article_4825_3879c911a19d00a195fb557e68554586.pdf
Iranian chemical communication
2423-4958
2423-4958
2019
7
Issue 3, pp. 160-229, Serial No. 24
Catalytic application of 3-methyl-1-sulfonic acid imidazolium tetrachloroferrate as nanostructured catalyst on the cross-aldol condensation reaction of cycloalkanones with aldehydes
Ardeshir
Khazaei
Ahmad Reza
Moosavi-Zare
Saeed
Firoozmand
3-methyl-1-sulfonic acid imidazolium tetrachloroferrate {[Msim]FeCl4} as an efficient sulfur catalyst was prepared and applied, as an efficient catalyst, for the cross-aldol condensation reaction between cycloalkanones and arylaldehydes to give α,αʹ- bis(arylidene)cycloalkanones in high yields and short reaction times at 75 °C under solvent-free conditions. 3-methyl-1-sulfonic acid imidazolium tetrachloroferrate {[Msim]FeCl4} as an efficient sulfur catalyst was prepared and applied, as an efficient catalyst, for the cross-aldol condensation reaction between cycloalkanones and arylaldehydes to give α,αʹ- bis(arylidene)cycloalkanones in high yields and short reaction times at 75 °C under solvent-free conditions. 3-methyl-1-sulfonic acid imidazolium tetrachloroferrate {[Msim]FeCl4} as an efficient sulfur catalyst was prepared and applied, as an efficient catalyst, for the cross-aldol condensation reaction between cycloalkanones and arylaldehydes to give α,αʹ- bis(arylidene)cycloalkanones in high yields and short reaction times at 75 °C under solvent-free conditions.
Sulfonic acid functionalized imidazolium salt
3-methyl-1-sulfonic acid imidazolium tetrachloroferrate
cross-aldol condensation
α
αʹ- bis(arylidene)cycloalkanone
solvent-free
2019
07
01
206
213
https://icc.journals.pnu.ac.ir/article_5343_74b2e31c1b52399b418fb6e037473523.pdf
Iranian chemical communication
2423-4958
2423-4958
2019
7
Issue 3, pp. 160-229, Serial No. 24
4-Aryl-2, 6-di(pyren-1-yl)pyridines: A facile procedure for synthesis and studying of fluorescence properties
Mohammad Reza
Asaadi
Hosein
Behmadi
Abdolhossein
Massoudi
Mohammad
Shaker
Pyrene and its derivatives exhibit thermal stability, high extinction coefficients, excimer formation, high photoluminescence, long fluorescence lifetime, fluorophoric properties and enhanced charge carrier mobility which make them find applications in optoelectronic area and are useful as large planar synthetic building blocks in supramolecular chemistry. One of the approaches to overcome this downside is the introduction of bulky aryl/alkyl substituents or incorporation heteroatoms into the π-extended conjugated system of pyrene. In this work, Some new derivatives of 4-Aryl-2, 6-di(pyren-1-yl)pyridines have been synthesized through one-pot reaction and were formed with cyclization of Arylaldehydes, 1-acetylpyrene and ammonium acetate in acetic acid. The products were confirmed by FT-IR, Mass, 1H-NMR, 13C-NMR and elemental analysis. These new compounds were subsequently studied for their fluorescence properties.
4-Aryl-2,6-di(pyren-1-yl)pyridines
1-acetylpyrene multicomponent reactions
fluorescence
2019
07
01
214
221
https://icc.journals.pnu.ac.ir/article_5347_20311f1cc7a15a73ca66f687d18f8e22.pdf
Iranian chemical communication
2423-4958
2423-4958
2019
7
Issue 3, pp. 160-229, Serial No. 24
Adsorption of proline amino acid on the surface of fullerene (C20) and boron nitride cage (B12N12): A comprehensive DFT study
Roya
Ahmadi
Mohammad Reza
Jalali Sarvestani
In this study, the performance of fullerene (C20) and boron nitride cage (B12N12) as a sensing material for detection of proline was evaluated by density functional theory. For this purpose, the structures of proline, C20, B12N12 and the derived products from the proline adsorption on the surface of nanostructures were optimized geometrically. Then, IR and Frontier molecular orbital calculations were performed on them. The obtained adsorption energies, enthalpy changes (ΔHad) and Gibbs free energy variations (ΔGad) demonstrate that proline adsorption on the surface of the boron nitride cage is exothermic, spontaneous and experimentally feasible. Whilst, the proline interaction with C20 is endothermic, non-spontaneous and experimentally impossible. The effect of temperature on the adsorption process was also checked out and the results reveal that 298 K is the best temperature for the adsorption procedure. The Calculated specific heat capacity values show that boron nitride cage can be utilized as a sensing material in the construction of thermal biosensors for proline determination. The calculated molecular orbital parameters indicate that B12N12 could be used as a neutral ion carrier and also an electroactive sensing material in the development of potentiometric and conductometric biosensors. All of the calculations were implemented by density functional theory method and B3LYP/6-31G(d) basis set.
Proline
fullerene (C20)
boron nitride cage (B12N12)
adsorption and density functional theory
2019
07
01
222
229
https://icc.journals.pnu.ac.ir/article_5409_1f5b435a8d66462ce9b538c4faed3e74.pdf