2024-03-19T12:13:13Z
https://icc.journals.pnu.ac.ir/?_action=export&rf=summon&issue=204
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
Electrosynthesis and optical modeling of ZnO nanostructures
Narges
Ajami
Ali
Ehsani
Ferydon
Babaei
Ashraf
Heidaripour
Optical modeling was applied for obtaining absorbance spectra and band gap values for different morphology of ZnO semiconductor. In optical modeling, the relative permittivity scalars of zinc oxide coral like nanorods were calculated using the Bruggeman homogenization formalism. ZnO nano rods (ZONRs) as a nucleus layer were fabricated on the Indium Tin Oxide (ITO) by chronoamperometry (CA) in aqueous solution containing different concentration of zinc nitrate. Reduction of nitrate anion is a good resource for hydroxyl ion that with zinc anion results ZnO. The orientation and morphology of both the nucleus layer and successive coral like ZONRs were analyzed using X-ray diffraction (XRD).
Optical modeling
ZnO
Chronoamperometry
Coral like nanostructure
2015
04
01
72
77
https://icc.journals.pnu.ac.ir/article_949_3fd4d873774bd43300be8c87fc7a85de.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
Microwave assisted green synthesis of α, ά- bis (substituted- benzylidene) alkanones
Mohammad Ali
Nasseri
Ali
Allahresani
Batol
Zakeri Nasab
Microwave assisted green synthesis of α, ά- bis (substituted- benzylidene) alkanones by the crossed- aldol condensation reaction of substituted aryl aldehydes with ketones in the presence of catalytic amount of NbCl5 in good to excellent yields. This reaction is carried out under solvent-free conditions. The results showed that aldehydes bearing electron–donating substituent's on phenyl-ring favored the formation of product in good to excellent yields with reaction times ranging between 3 and 7 min. In addition, furfural, cinamaldehyde, thiophene-2-carbaldehyde and 5-methylthiophene-2-carbaldehyde were investigated in aldol reaction, and the results showed excellent yields. Also, the reactions were carried out at room & thermal (80 0C) conditions. The results showed that the yields are in accordance with the microwave irradiations, But the time is 1.5-5 h at room temperature and 15-45 min in thermal conditions.
Niobium pentachloride
solvent-free
Aryl aldehyde
microwave irradiation
2015
04
01
78
85
https://icc.journals.pnu.ac.ir/article_950_42919c08339e12b81fe1aa5e97db66e9.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
Kinetic study of the electrocatalytic oxidation of acetaldehyde at Ni/Al layered double hydroxide modified sol-gel derived carbon ceramic electrode
Ghasem
Karim-Nezhad
Ali
Pashazadeh
In this research, we reported a novel modified carbon ceramic electrode (CCE) using Ni/Al Layered double hydroxide as modifier was fabricated by sol-gel technique. The Ni/Al Layered double hydroxide modified sol gel derived carbon ceramic (Ni/Al LDH-SGD-CC) electrode was used for electrocatalytic oxidation of acetaldehyde. The oxidation of acetaldehyde happens at the potential where Ni (III) species are generated. The modified electrode exhibited remarkable electrocatalytic activity for the oxidation of acetaldehyde under alkaline conditions, indicating that the anodic oxidation of acetaldehyde could be catalyzed at Ni/Al LDH-SGD-CC electrode. This proves that the Ni/Al LDH bears the main role in electro-catalytic oxidation of acetaldehyde. Finally, by using the cyclic voltammetry, chronoamperometric and tafel plots method, the catalytic rate constant, charge-transfer coefficient, the number of electrons involved in the rate-determining step (nα) and exchange current density for chemical reaction of acetaldehyde was estimated as 0.356 × 104 cm3 mol-1 s-1, 0.51, 1 and 2.76×10-8 Acm-2 respectively.
Ni/Al layered double hydroxide
modified carbon ceramic electrode
electrocatalytic oxidation
acetaldehyde
2015
04
01
86
95
https://icc.journals.pnu.ac.ir/article_978_0e6a574a99c7584b35df8cc1e661c554.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
Three-component procedure for the synthesis of new chiral spirooxindolopyrrolizidines via catalytic highly enantioselective 1,3-dipolar cycloaddition
Mohammad Javad
Taghizadeh
Khosrow
Jadidi
The catalytic highly regio-, diastereo-, and enantioselective synthesis of a small library of spiropyrrolizidineoxindolesvia a four-component 1,3-dipolar cycloaddition reaction of azomethine ylides, derived from isatin, with electron-deficient dipolarophilewas described. The process occurs at room temperature in aqueous ethanol as a green solvent and in the presence of a bidendatebis(imine)–Cu(II)triflate complex as catalyst.The reaction mechanism is discussedon the basis of the assignment of the absolute configuration of the cycloadducts.The catalytic highly regio-, diastereo-, and enantioselective synthesis of a small library of spiropyrrolizidineoxindolesvia a four-component 1,3-dipolar cycloaddition reaction of azomethine ylides, derived from isatin, with electron-deficient dipolarophilewas described. The process occurs at room temperature in aqueous ethanol as a green solvent and in the presence of a bidendatebis(imine)–Cu(II)triflate complex as catalyst.The reaction mechanism is discussedon the basis of the assignment of the absolute configuration of the cycloadducts.
Chiral auxiliaries
chiral spiro-oxindolopyrrolizidines
asymmetric 1-3-dipolar
azomethineylide
2015
04
01
96
104
https://icc.journals.pnu.ac.ir/article_979_200308267ea4e560812fe172c17aa549.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
Study on the effective decontamination and hydrolysis of sulfur mustard agent simulant using tenorite (CuO) nanoparticles as a destructive catalyst
Meysam
Sadeghi
Sina
Yekta
Mirhassan
Hosseini
Mohammad javad
Taghizadeh
In the present study, tenorite (CuO) nanoparticles have been assayed for their catalytic properties. The decontamination reaction of chloro ethyl ethyl sulfide (CEES) as an surrogate of sulfur mustard simulant have been accomplished on the surface of CuO NPs with different weight ratios at ambient temperature and monitored by Gas chromatography equipped with Flame ionization detector (GC-FID) and Gas chromatography coupled with a mass spectroscopy (GC-MS). CuO NPs were successfully synthesized via precipitation method in the absence and presence of polyvinylpyrrolydone (PVP) and copper (ΙΙ) nitrate as the precursors. PVP was used as a capping agent to control and reduce the agglomeration of the nanoparticles. The synthesized CuO NPs were characterized by Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques. The GC analysis results has revealed that the decontamination of CEES occurred in n-hexane solvent with the weight ratio of 1:40 (CEES: CuO NPs) after 12 h with more than 90% yield. The hydrolysis product such as hydroxyl ethyl ethyl sulfide (HEES) was also identified by GC-MS analysis.
Tenorite (CuO) nanoparticles
chloroethyl ethyl sulfide (CEES)
decontamination
hydrolysis
Precipitation
polyvinylpyrrolydone (PVP)
2015
04
01
105
113
https://icc.journals.pnu.ac.ir/article_980_491b815e0234e21b9397abadfe7d9d6e.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
A new facile route to synthesize thieno[3,2-e][1,2,4]triazolo[4,3-c]pyrimidine derivatives
Mehdi
Soleimany
Jalil
Lari
Hooshang
Vahedi
Morteza
Imanpour
A new facile route for synthesis of 3- (aryl) -8, 9- di (alkyl) thieno [3,2-e] [1,2,4] triazolo pyrimidines derivative from the same starting material, 2- amino - 4,5 -di (alkyl) thiophene-3- carboxamide, has been developed through heterocyclization of the corresponding arylidene-hydrazino -5,6 -di (alkyl) thieno [2,3-d] pyrimidine under refluxing condition with acetic anhydride followed by air oxidation. The products were obtained in high yield with an easy work-up in simple reaction along with the purification of products by non-chromatographic method. This general synthetic procedure can be extended to the preparation of a wide variety of isomeric triazoles using 2-amino thiophene-3-carboxamide bifunctional derivatives.
Thieno[3
2-e][1
2
4]triazolo[4
3-c]pyrimidines heterocyclization acetic anhydride air oxidation
2015
04
01
114
120
https://icc.journals.pnu.ac.ir/article_990_64c0478c874aeb47e50c95b79b0dacdb.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
Ammonium nitrate as an efficient and green reagent for the oxidation of alcohols into their corresponding carbonyl compounds in the presence of heteropoly acids
Vahid
Azizkhani
Ali
Ramazani
Sang
Woo Joo
Simple, cheap and green protocol for effective conversion of alcohols to corresponding carbonyl compounds in the presence of H14[NaP5W30O110] and ammonium nitrate is reported. The products were characterized by FT-IR and comparison of their physical properties with those reported in the literatures. The progress of the reaction was monitored by thin layer chromatography (TLC) technique. The aliphatic products were detected by gas chromatography–flame ionization detector. Reactions were completed within 15-35 minutes at room temperature. In order to investigate the catalyst reusability, the oxidation of benzyl alcohol was carried out in the presence of H14[NaP5W30O110]. At the end of each reaction, the catalyst was separated and the recovered catalyst was reused for at least three runs without significant degradation in catalytic activity and performance.
alcohols
heteropoly acids
Oxidation
Heterogeneous catalyst
ammonium nitrate
energetic materials
2015
04
01
121
131
https://icc.journals.pnu.ac.ir/article_1195_4f7fb960d824553ebe3ce1d1d1cbbee8.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
Synthesis of methyl 2-[2-(alkylimino)-4-oxo-3-phenyl-1,3-thiazolan-5-yliden]acetate derivatives under solvent-free condition
Rahimeh
Hajinasiri
Sobhan
Rezayati
An efficient synthesis of Methyl 2-[2-(alkylimino)-4-oxo-3-phenyl-1,3-thiazolan-5-yliden]acetate derivatives via simple three-component reaction and one-pot reactions between isoquinoline, dimethyl acetylenedicarboxylate and N-phenylthiourea under solvent-free conditions without using any additional catalyst, is described. The mild reaction conditions and good yields and exhibit the synthetic advantage of this method. Also this method is environmentally friendly. The methods of green chemistry continue to grow in importance. Alternative processes help to conserve resources and can even reduce costs. The replacement of convention solvents with water or solvent-free conditions, which is harmless to health and is available in large quantities. The thiazolium rings are key units in agricultural compounds and drugs.
Isoquinoline
solvent-free
N-phenylthiourea
thiazolan
green chemistry
2015
04
01
132
136
https://icc.journals.pnu.ac.ir/article_995_f24048133f3d176ff37d3145b71efae5.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
ZnFe2O4 nanoparticle: Synthesis and photocatalytic activity under UV-vis and visible light
Maryam
Movahedi
Fahimeh
Kazemi-Cheryani
Nahid
Rasouli
Hossein
Salavati
In the present work, the ZnFe2O4 nanoparticle has been successfully synthesized. The obtained sample was characterized by X-ray diffraction (XRD), emission scanning electron microscopy (FE-SEM) and its optical property was examined by UV-Vis spectrophotometer. FE-SEM revealed that the particle size of the ZnFe2O4 of about 47 nm was synthesized. The photocatalytic performance under UV-Vis and visible light were evaluated by decolorization of congo red (CR) anionic dye solution. The UV-Vis and visible light irradiation source are a high pressure mercury lamp, 400 W and filament tungsten lamp 100 W respectively. The photocatalytic results show that the ZnFe2O4 sample can be 100% degrading (CR) dye solution after 30 and 120 min under UV-Vis and visible irradiation respectively
ZnFe2O4
photocatalyst
visible light
Congo red
2015
04
01
137
142
https://icc.journals.pnu.ac.ir/article_996_4816547ba11d4d83e6261cd5151237a8.pdf
Iranian chemical communication
2423-4958
2423-4958
2015
3
Issue 2, pp. 72-147, Serial No. 7
Oxidative aromatization of some 1,4-dihydropyridines by aqueous hydrogen peroxide in ethanol
Masoomeh
Abdoli
Maryam
Hajibabaiee
Some 3, 5-diacyl or 3,5-diester 1,4-dihydropyridines were oxidized to the corresponding pyridine derivatives using hydrogen peroxide in aqueous ethanol in the presence of potassium bromide and acetic acid as the catalysts. The reaction was carried out in ethanol and products were isolated in high to excellent yields. However, oxidation of 3,5-diacetyl 1,4-dihydropyridines is slower than 3,5-diester 1,4-dihydropyridines under the same condition. Furhermore, the reaction is facilitated by electron releasing groups on 4-substituent of dihydropyridine ring. The cheapness of reagent, high yielding, easy workup and mild condition makes this method a useful addition to the available method in organic synthesis. In addition, employment of clean oxidant H2O2 together with nontoxic solvent ethanol makes it friendly to the environment.
3
5-Diester 1
4-dihydropyridines
5-diacetyl 1
4-dihydropyridine
2015
04
01
143
147
https://icc.journals.pnu.ac.ir/article_1004_01ad29650f520c3141e9903e643e1772.pdf