2024-03-19T14:41:55Z
https://icc.journals.pnu.ac.ir/?_action=export&rf=summon&issue=669
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
Microwave-assisted solvent-free synthesis and antibacterial evaluation of 1-azabicyclo[3.1.0]hexane-3-enes
Bagher
Mohammadi
Ebrahim
Rezaei
Fouzieh
Moghadami
This work described a simple and efficient method for the synthesis of 1-azabicyclo[3.1.0]hexane-3-ene derivatives. arylidenmalononitriles and hydroxylamine hydrochloride in the presence of NaOH, under microwave irradiation and solvent-free conditions produced the titled compounds in good to excellent yields. Using of simple chemicals, short reaction times, and solvent-free conditions, high yields of products, high atomic economy , and eco-friendly are the important advantages of this method. The antibacterial effect of 4-amino-2,6-bis(2,4-dichlorophenyl)-1-azabicyclo[3.1.0]hex-3-ene-3,5-dicarbonitrile was evaluated by minimum inhibitory concentration and disk diffusion method against the standard strains of Staphylococcus aureus and Pseudomonas aeruginosa. Minimum inhibitory concentrations of 2h were 40 and 30 mg/ml for P. aeruginosa and S. aureus respectively and the maximum inhibitory zones were 4 and 5 mm on average, respectively.
Azabicyclo
microwave irradiation
antibactery
solvent-free
staphylococcus
2018
07
01
218
227
https://icc.journals.pnu.ac.ir/article_3624_8187cd75ff79d4a84a61feb4e7603886.pdf
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
Performance comparison of graphene and graphene oxide-supported palladium nanoparticles as a highly efficient catalyst in oxygen reduction
Mir Reza
Majidi
Seyran
Ghaderi
In this work, the performance of graphene nanosheets (GNs) and graphene oxide (GO) nanosheets, as a support for palladium nanoparticles (PdNPs) toward oxygen reduction reaction (ORR), was studied. The graphene nanosheets were functionalized by a new and simple method. The PdNPs were synthesized on a glassy carbon electrode (GCE) modified with GNs or GO via a potentiostatic method; without using any templates, surfactants or stabilizers. The surface morphology of the modified electrodes was studied by scanning electron microscopy, energy dispersive X-ray and X-ray diffraction techniques. Cyclic voltammetry and rotating disk electrode (RDE) voltammetry methods were used for calculation of electrochemical parameters of the ORR. The GCE modified with PdNPs-GO exhibited a higher catalytic activity in comparison with PdNPs-GNs toward ORR. The high electrocatalytic activity of PdNPs-GO/GCE was attributed to oxygen-containing groups that were formed on the GO during functionalization of graphene nanosheets. These groups act as anchoring sites for metal nanoparticles and improve their dispersion on GO nanosheets. Also, mechanism of ORR was intensively investigated and transferred electron numbers in reaction was calculated using RDE data analysis. Finally, stability of the modified electrodes was studied and the results confirmed that the GCE modified with PdNPs-GO has a long-term stability.
Oxygen reduction reaction
functionalization
graphene oxide nanosheets
Palladium nanoparticles
electrodeposition
2018
07
01
15
28
https://icc.journals.pnu.ac.ir/article_3629_1ad59668caa6da23c49280d257e46262.pdf
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
Synthesis, characterization and selective oxidation using a new copper (II) Schiff base complex derived from Alanine and 4-chloro3- formyl coumarin
Malihe
Ebrahimpour
Ghodsieh
Bagherzade
Ali Akbar
Sajadi
Rouhollah
Khani
A novel Schiff-base ligand (L: 2-[(4-chloro-2-oxo-2H-chromen-3-ylmethylene)-amino] propionic acid) was prepared from the reaction of 4-chloro3-formylcoumarin and alanine amino acid. Copper (II) complex was synthesized from the reaction of the ligand with Cu (OAc)2. H2O in ethanol. The ligand and its metal complex were characterized by elemental analysis (CHN), ICP, thermal analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), 1HNMR, and 13C NMR techniques. The complex was found to be an efficient catalyst and reusable in the selective oxidation of sulfides to the corresponding sulfoxides without the formation of any sulfone using the green oxidant, H2O2, at room temperature and under solvent-free conditions.
Amino acid
Schiff base
copper complex
catalyst
selective oxidation
oxidation of sulfides
2018
07
01
228
241
https://icc.journals.pnu.ac.ir/article_3627_b89e45068bc08202c4fdd9933f098e7d.pdf
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
Preparation of an oxetan-phenyltetrahydropyridazine-3,6-dione derivative using some chemistry tools
Paat
Josefa
figueroa
Lauro
Lopez
Maria
Hau
Lenin
Diaz
Francisco
Garcia
Elodia
Pool
Eduardo
rosas
Marcela
Mateu
Virginia
The aim of this study was to synthesize a new oxetan-phenyltetrahydropyridazine-3,6-dione derivative (compound 6) using with different techniques. The first method was achieved by the preparation of a phenylhydrazine derivative (2) using three components system (3,17-aldol-estradiol, phenylhydrazine, 5-hexyn-3-ol) in presence of Copper(II). Then, 2 Was reacted with tert-butyldimethylsilyl chloride to form the compound 3 (trimethylbutan-silyloxy-steroid-hydrazine). Following, a pyridazine derivative (4); was prepared by the reaction of 3 with succinic acid using boric as catalyst. The compound 4 was reacted with hydrofluoric acid to form the a tetrahydropyridazine-3,6-dione (5). Finally, the preparation of 6 was carried out by the reaction of 5 with CopperII. Spectroscopy analyses NMR was used to confirm the chemical structure of compounds. In conclusion, in this study a facile method to synthesis of an oxetan-phenyltetrahydropyridazine-3,6-dione is reported.
steroid
derivative
phenylhydrazine
tetrahydropyridazine
oxetan
2018
07
01
256
265
https://icc.journals.pnu.ac.ir/article_4594_7956810b773bf2e8af357e7b71094a1c.pdf
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
Nano Al2O3/KF using for synthesis of some Hantzsch type-products
Asadollah
Farhadi
Milad
Ramyar
Mohammad Ali
Takassi
A protocol for the synthesis of 1,4-dihydropyridines (Hantzsch type-products) was developed by means of a three-component condensation of an aldehyde, a β-dicarbonyl compound, ammonium acetate and nano Al2O3/KF as catalyst. This reaction was carried out under different conditions including i) solvent-free ii) and reflux in different solvents. In all conditions, the desired products were obtained in high yields after relatively short reaction times. Nevertheless, the reactions proceed faster and in higher yields when they were carried out in ethanol. Compared to the classical Hantzsch reaction conditions and previously reported protocols, this protocol has the advantages of consistently excellent yields and short reaction times. After the reaction, the catalyst could be recovered easily.
Hantzsch type-products
1
4-dihydropyridines
Nano Al2O3/KF
ethanol
different solvents
2018
07
01
266
270
https://icc.journals.pnu.ac.ir/article_3630_1877699a86badad555eba2e97933b492.pdf
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
Synthesis, characterization and polymerization of a novel acrylate monomer containing both 4H-pyran-4-one and 1,2,3-triazole moiety and evaluation of their antibacterial activity
Mahnaz
Saraei
Gholamreza
Zarrini
Parisa
Rajabpour
A novel acrylate monomer containing 4H-pyran-4-one and 1,2,3-triazole ring, {1-[4-(4-oxo-6-phenyl-4H-pyran-2-yl)benzyl]-1,2,3-triazol-4-yl}methyl acrylate was synthesized by the reaction of 2-{4-[(4-(hydroxymethyl)-1,2,3-triazol-1-yl)methyl]phenyl}-6-phenyl-4H-pyran-4-one with acryloyl chloride in the presence of triethylamine. The structure of the acrylate monomer was established on the basis of FT-IR, 1H NMR, 13C NMR, MS and elemental analysis. This monomer was polymerized using 2,2´-azobisisobutyronitrile (AIBN) as the initiator in N,N-dimethylformamide solution. Thermal stability of the polymer was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The synthesized compounds were evaluated for their antibacterial activity against Gram-positive and Gram-negative bacteria using the disk diffusion method. The results of antibacterial assay indicated that these compounds exhibited moderate bactericidal activity.
4H-Pyran-4-one
triazole
acrylate monomer
antibacterial activity
free radical polymerization
thermal properties
2018
07
01
271
279
https://icc.journals.pnu.ac.ir/article_3674_e64fb2607dc58caa7a8a30070f0fccf1.pdf
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
The theoretical study of adsorption of HCN gas on the surface of pristine, Ge, P and GeP-doped (4, 4) armchair BNNTs
Mahdi
Rezaei Sameti
Fateme
Ataeifar
In this research, the effects of HCN adsorption on the surface of the pristine, Ge, P, and GeP doped boron nitride nanotube (BNNTs) are investigated by using density function theory at the B3LYP/6–31G(d, p) level of theory. At the first step, we consider different configurations for adsorbing HCN molecule on the surface of BNNTs. The optimized models are used to calculate the structural, electrical, NQR parameters and quantum descriptors such as global hardness, global softness, electrophilicity, gap energy, Fermi level energy, electronic chemical potential, and electronegativity of BNNTs/HCN complex. Inspection of results demonstrates that with doping Ge impurity the sensivity of BNNTs for adsorbing HCN molecule increase significantly from original values. The adsorption of HCN molecule on the surface of Ge-doped is more stable and favourable than other those models. With adsorbing of HCN gas and doping of Ge and GeP the NQR, quantum molecular descriptors and molecular orbital energies of the nanotube alter significantly from original state. On the other hand the electrophilicity index of E model is more than those other models.
BNNTs
HCN adsorption
DFT
NQR
DOS
2018
07
01
280
292
https://icc.journals.pnu.ac.ir/article_3675_69222eac71802bb543043585a51e2ebb.pdf
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
Facile and convenient synthesis of 2-amino-5,10-dioxo-4-aryl-5,10-dihydro-4H-benzo[g]chromene-3-carbonitrile derivatives by electrocatalytically chemical transformation
Zahra
Vafajoo
Davood
Kordestani
Saba
Vafajoo
2-Amino-5,10-dioxo-4-aryl-5,10-dihydro-4H-benzo[g]chromene-3-carbonitrile derivatives are obtained in excellent yields with a simple and efficient procedure.This reaction can occur using electrocatalytic multicomponent chain transformation of aryl aldehydes, 2-hydroxynaphthalene-1,4-dione and malononitrile under neutral and mild conditions. Moreover, electrolysis is done in CH3CN as solvent, Tetrabutylammonium fluoride (TBAF) as an effective supporting electrolyte and an iron electrode as the cathode and a graphite electrode as the anode in undivided cell. Also Excellent conversions of the starting materials were obtained under 10 mA/cm2 current densities after 0.54 F/mol of electricity had been passed and I=50 mA at room temperature. The key advantages of this method are the high yields, simple work up the non-chromatographic purification of products.
2-Amino-4H-chromene
multicomponent
electrosynthesis
2-hydroxynaphthalene-1
4-dione
2018
07
01
293
299
https://icc.journals.pnu.ac.ir/article_3832_a7025a909901865acf9d61407993a241.pdf
Iranian chemical communication
2423-4958
2423-4958
2018
6
Issue 3, pp. 218-324, Serial No. 20
Electrochemical sensing of dopamine in the presence of ascorbic acid using carbon paste electrode modified with molybdenum Schiff base complex/1-butyl-3-methylimidazolium tetrafluoroborate
Hamid Reza
Zare-Mehrjardi
In this paper, the carbon paste electrode (CPE) is modified using an ionic liquid (1-Butyl-3-methylimidazolium tetrafluoroborate, [BMIM]BF4) and the cis-dioxo-bis[3-methoxy-2,2-dimethylpropanediamine] molybdenum(VI) complex (cis-[Mo(O)2L]). In order to study of the electrochemical behavior of ascorbic acid (AA) and dopamine (DA) at the surface of the prepared CPEs, the differential pulse and cyclic voltammetric methods (DPV and CV) were used. The percent of the [BMIM]BF4 in the matrix of the modified CPE is optimized, and then the effect of the pH of the buffered solution on the electrode response and the resolution between the anodic peaks of AA and DA is studied by CV and DPV. These results reveal that by application of the modified CPE a peak resolution about 325mV is obtained for AA and DA and the linear range for AA and DA in buffered solutions of pH 5.0 is acquired in the range from 5.0×10−7 to 1.0×10−3 M. The respective limits of detection (S/N = 3) were 1×10−7 M and 2×10−7 M for DA and AA, respectively. Surface regeneration and the very easy preparation of the modified CPE together with the very good peak resolution and sub-micromolar detection limits designate the prepared CPE in this work appropriate for simultaneous voltammetric determination of DA and AA.
Molybdenum Schiff base complex
[BMIM]BF4
dopamine
ascorbic acid
voltammetry
2018
07
01
300
311
https://icc.journals.pnu.ac.ir/article_3838_c9e3ebc0940034f7e0dac4d49b5b5db9.pdf