Iron (III) Phosphate Catalyzed the Synthesis of 4-quinolones
Samaneh
Samadi
Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran.
author
Farahnaz
K. Behbahani
Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran.
author
text
article
2018
eng
New and efficient methods have been developed for the synthesis of 4-quinolones throughout Conrad–Limpach synthesis in diphenyl ether under reflux condition. This method possesses various advantages such as using a green and versatile catalyst, easy procedure, work up and separation, being free from column chromatography, and atom economic. Also, this kind of solvent and the reaction temperature has an important role in the yield of reaction. When toluene, ethanol, acetonitrile and chloroform were subjected as solvent in ambient temperature and reflux condition, the desired product did not result. Moreover, when diphenyl ether was employed in room temperature – at 100, 150 and 200 °C – it was observed that the product was obtained. Interestingly, the desired product was obtained in good yield under reflux condition in diphenyl ether.
Chemical Methodologies
Sami Publishing Company
2645-7776
2
v.
3
no.
2018
181
185
https://www.chemmethod.com/article_60161_a8efab7c987d678784609f0be8e4b63b.pdf
dx.doi.org/10.22034/chemm.2018.60161
Cyclic Voltammetry of Zirconyl Chloride (ZrOCl2) in KF Medium Using Silver Working Electrode (SWE)
Esam A.
Gomaa
Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
author
Anwer
G. Al- Harazie
Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
author
Mahmoud
N.Abdel-Hady
Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
author
text
article
2018
eng
The cyclic Voltammetry of zirconyl chloride with different concentrations was measured experimentally using DY2000 cyclic Voltammetry apparatus in 0.1M KF (potassium fluoride) as a supporting electrolyte. The silver electrode was used as a supporting working electrode. The other two electrodes in the three-electrode system are platinum wire and Ag / AgCl electrode immersed in saturated KCl solution. The redox mechanism was supported by reduction and/or oxidation. Effect of scan rate was also examined and the redox system is diffusion controlled.The different used scans are 0.1,0.02 and 0.01 Volt per Sec. The relation between iP and log scan rate was done to ensure the redox mechanism.It was concluded that zirconyl ions are hydrolyzed in 0.1M KF solutions forming hydroxyl complexes.
Chemical Methodologies
Sami Publishing Company
2645-7776
2
v.
3
no.
2018
186
193
https://www.chemmethod.com/article_60859_9fc3cbfe32ec3b09ff2b083d562de689.pdf
dx.doi.org/10.22034/chemm.2018.60859
Selective Transport of Aromatic Compounds across Parchment Supported Prussian blue Membrane
Ashraf
El Hashani
Chemistry Department, Faculty of Science, University of Benghazi, Benghazi, Libya
author
Nura
Ben Khayal
Chemistry Department, Faculty of Science, University of Benghazi, Benghazi, Libya
author
Khaled Muftah
Elsherif
Chemistry Department, Faculty of Science, University of Benghazi, Benghazi, Libya
author
text
article
2018
eng
The study of permeation of Aromatic compounds across parchment-supported membrane treated with Prussian blue is presented. The skin layer of the metal hexacyanoferrate membrane consists of a network structure could be selectively used with defined pore size in the nanometer range to permeate molecules with different size molecules. In order to demonstrate a possible sieving of molecules, we have investigated the permeation of a variety of aromatic compounds such as aniline (An), phenol (Ph), and naphthalene (Np). For these neutral compounds, a size-selective transport was found. Size lead to a separation factor α(An/Ph) of 1.5 and α(An/Np) of 4 respectively. Finally, it is demonstrated that purely inorganic membrane of Prussian Blue (PB) can be prepared upon adsorption of ferric ion and hexacyanoferrate on porous support.
Chemical Methodologies
Sami Publishing Company
2645-7776
2
v.
3
no.
2018
194
203
https://www.chemmethod.com/article_60860_c2991682228db3baa75d07a6f5550055.pdf
dx.doi.org/10.22034/chemm.2018.60860
On The Characterization, Utilization and Wastewater Detoxification Potential of Pyrolysed Moringa oleifera Pods and Shells PART A: Sorbent Preparation and Characterization
Adams Udoji
Itodo
Department of Chemistry, Federal University of Agriculture Makurdi, Nigeria
author
Raymond Ahulle
Wuana
Department of Chemistry, Federal University of Agriculture Makurdi, Nigeria
author
Patience Ngunan
Wombo
Department of Chemistry, Federal University of Agriculture Makurdi, Nigeria
author
text
article
2018
eng
In part A of this research, we reported adsorbent generation, characterization and optimization of factors affecting sorption. Destructive distillation technique was carried out for transforming biomass into biosorbents. Pyrolysed Moringa oleifera Pods (PMOP) and Shells (PMOS) were used. Adsorbents were characterized for surface morphology, crystallographic pattern, active functional sites and elemental composition using SEM, TEM, PXRD, FTIR and CHNS/O analyzer respectively. Performance assessment of adsorbent was based on removal efficiency. The effect of pH, early adsorbate concentration, contact time, adsorbent dose and temperature on chromium uptake was studied in column mode. Results show the role of both physical and chemical characteristics of the adsorbents. The maximum adsorption capacity of PMOS is 277.3 mg/g. Performance of derived sorbent compared with commercially available activated carbon shows no statistical significance at p< 0.05.
Chemical Methodologies
Sami Publishing Company
2645-7776
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3
no.
2018
204
222
https://www.chemmethod.com/article_61056_7d1815f97637989d2e7500051f33d79f.pdf
dx.doi.org/10.22034/chemm.2018.61056
Insight into the Stability, Reactivity, Structural and Spectral Properties of the Anti, Syn-endo and Syn-exo Isomers of Bis(N-ethoxy-N-ethyl-dithiocarbamato)Nitrido Technetium-99m [99mTc-N(NOEt)2] Radiopharmaceutical
Mehdi
Nabati
Synthesis and Molecular Simulation Laboratory, Chemistry Department, Pars Isotope Company, P.O. Box: 1437663181, Tehran, Iran
author
text
article
2018
eng
(Ethoxy(ethyl)amino)methanedithiol is used in nuclear medicines as a ligand for the preparation of diagnostic radiopharmaceuticals. Among the available radionuclide tracers, technetium-99m (99mTc) is a good choice for myocardial perfusion imaging. Among the various cardiac perfusion imaging agents, bis(N-ethoxy-N-ethyl-dithiocarbamato)nitride technetium-99m radiopharmaceutical has a very high uptake. During the present study, the reactivity, stability, structural and spectral properties of anti, syn-endo and syn-exo isomers of bis(N-ethoxy-N-ethyl-dithiocarbamato)nitride technetium-99m radiopharmaceutical were discussed by density functional theory (DFT) computational method. It can be deduced from the theoretically applied computations that the anti- molecular structure is generally more stable than the syn-endo- and syn-exo- ones.
Chemical Methodologies
Sami Publishing Company
2645-7776
2
v.
3
no.
2018
223
238
https://www.chemmethod.com/article_62758_2b8fa7eb87de68a668a07763e8055e53.pdf
dx.doi.org/10.22034/chemm.2018.62758
Investigation of NMR Parameters of para-Sulfonato-calix[4]arene by HF Calculation
Masoumeh
Sayadian
Department of Chemistry, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
author
Hamidreza
Sadegh
West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Division of Functional Materials and Biomaterials, Al. Piastow 45, Szczecin, Poland
author
text
article
2018
eng
Conformationally-rigid para-sulfonato-calix[4]arene (C28H24O16S4) was isolated. The NMR parameters of the structure of calix[4]arenes have been compared. The study of organic structures to form nanoporous materials is a well-known chemical phenomena (supermolecular chemistry) that is necessary for finding the crystal forms of calix[4]arenes. We investigated and compared the hydrogen bonding, oxygen, and sulfur atom effects on calix[4]arene via Hartree-fock(HF) theory by the Gaussian 98 of program package.
Chemical Methodologies
Sami Publishing Company
2645-7776
2
v.
3
no.
2018
239
246
https://www.chemmethod.com/article_63198_60fcbf95c00f8230f12ba7492638ed69.pdf
dx.doi.org/10.22034/chemm.2018.63198
New Organic Compounds Based on Biphenyl for Photovoltaic Devices: DFT Theoretical Investigation
Wafae
Saidi
MEM, Faculty of Sciences, University Moulay Ismail, Meknes, Morocco
author
Tayeb
Abram
MEM, Faculty of Sciences, University Moulay Ismail, Meknes, Morocco
author
Lahcen
Bejjit
MEM, Faculty of Sciences, University Moulay Ismail, Meknes, Morocco
author
Mohammed
Bouachrine
ESTM, Moulay Ismail University, Meknes, Morocco
author
text
article
2018
eng
Because of the specific characteristics of the π -conjugated molecules, they have become the most promising materials for the solar cell devices. To better grasp and anticipate of the π -conjugated compound, we have realized the study by using the DFT and ZINDO quantum chemical calculations. The purpose of the study of these compounds is to determine the geometries, electronic and optic properties by using the density functional theory (DFT/B3LYP) level with the correlation-consistent basis set 6-31G. On the other side, various physical parameters (HOMO, LUMO, Egap, Voc, λabs) were determined from the fully optimized structures. All This fundamental information will lead to propose new promising materials for organic solar cells.
Chemical Methodologies
Sami Publishing Company
2645-7776
2
v.
3
no.
2018
247
259
https://www.chemmethod.com/article_63678_9bb017068d0de7d9e07639ffd2a29998.pdf
dx.doi.org/10.22034/chemm.2018.63678
Eutectic Mixture Choline Chloride–Chloroacetic acid: a New and Efficient Catalyst for Synthesis of 3,4-Dihydropyrimidin-2-ones
Ahmad reza
Momeni
Faculty of Sciences, Shahrekord University, Shahrekord, Iran
author
Heshmat Allah
Samimi
Faculty of Sciences, Shahrekord University, Shahrekord, Iran
author
Hamed
Vaezzadeh
Faculty of Sciences, Shahrekord University, Shahrekord, Iran
author
text
article
2018
eng
Deep Eutectic Solvents (DES) with the properties of an ionic liquid can be formed between choline chloride and chloroacetic acid in a 1:1 molar ratio. In this paper, we discuss our success in synthesizing dihydropyrimidinones employing choline chloride: chloroacetic acid as catalyst. The advantage of using DES is in its ability to act as a solvent and catalyst simultaneously for the synthesis of dihydropyrimidinones via one-pot multi-component reaction of ethyl acetoacetate, aldehyde and urea. The results showed that choline chloride: chloroacetic acid based DES is the best catalyst and is successfully applicable to a wide range of aldehydes with high yields (70–95%) and short reaction times (5-75 min). The deep eutectic solvent can be easily recycled and reused.
Chemical Methodologies
Sami Publishing Company
2645-7776
2
v.
3
no.
2018
260
269
https://www.chemmethod.com/article_63681_c5b13ba663d73e26ffdbd178cf6d50b3.pdf
dx.doi.org/10.22034/chemm.2018.63681