2024-03-19T09:58:23Z
https://icc.journals.pnu.ac.ir/?_action=export&rf=summon&issue=518
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Synthesis and characterization of Schiff-base polymer derived from 2,5-dichloroaniline and 2-hydroxybenzaldehyde
Milad
Kazemnejadi
Aliakbar
Dehno Khalaji
Hossein
Mighani
Schiff base sal-2,5-Clan = 2-(2,5-dichlorobenzylideneamino)phenol used as a new precursor for preparation of poly-2-(2,5-dichlorobenzylideneamino)phenol (PDCBAP). In an aqueous alkaline medium, NaOCl oxidant is capable of oxidative poly-condensation reaction (OP). Both sal-2,5-Clan and PDCBAP were characterized by solubility tests, FT-IR, 1H-NMR spectroscopy and TG-DTA studies. FT-IR and 1H-NMR spectrum of PDCBAP indicates the formation of Ar-O-Ar bond. According to TG/DTA curves, PDCBAP demonstrated higher resistance against temperature than sal-2,5-Clan. At optimum reaction conditions, viz. time = 14h, [NaOCl]0 = 0.12 M, [KOH]0 = 0.1 M and T = 90°C, the yield of PDCBAP is 52.17%. Thermal studies indicated that PDCBAP is more stable than sal-2,5-Clan.
Oxidative poly-condensation
spectroscopy
Thermal studies
2017
07
01
237
241
https://icc.journals.pnu.ac.ir/article_2883_fcb93ed8ff2c0497061506ec08397325.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Simultaneous determination of Tropaeolin O and brilliant blue in food samples after cloud point extraction
Rouhollah
Heydari
Farzaneh
Bastami
Mohammad
Hosseini
Mohammad
Alimoradi
In this study, a simple and low-cost method was developed for extraction and pre-concentration of brilliant blue(BB) and Tropaeolin O(TO) in food samples using cloud point extraction (CPE) prior to spectrophotometric determination. The effects of main factors such as pH, surfactant and salt concentrations, incubation time and temperature on the cloud point extraction of both dyes were investigated and optimized. Linear range of calibration curves were obtained in the range of 50–4000 ng mL−1 for BB and 50–5000 ng mL−1 for TO under the optimum conditions. The limit of detection values for BB and TO were 10 and 20ng mL−1, respectively. The relative standard deviation (RSD) values of both dyes for repeated measurments (n=6) were less than 2.2 %. The obtained results demonstrate that the proposed method can be applied satisfactorily to determine these dyes in different food samples.
Brilliant blue
Tropaeolin O
triton X-100
cloud point extraction
spectrophotometric
food samples
2017
07
01
242
251
https://icc.journals.pnu.ac.ir/article_2964_caa9d51e5f08f312b512394a12308f1c.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Benign synthesis of N-aryl-3,10-dihydroacridin-1(2H)-one derivatives via ZnO nanoparticle-catalyzed Knoevenagel condensation/intramolecular enamination reaction
Hamid
Saeidian
Farzaneh
Moradnia
An efficient construction of 2-(N-arylamino)benzaldehydes and N-aryl-3,10-dihydroacridin-1(2H)-one derivatives starting from 2- hydroxybenzaldehydes has been developed. The synthesis of N-aryl-3,10-dihydroacridin-1(2H)-ones is based on the Knoevenagel condensation of dimedone to various 2-(N-arylamino)benzaldehydes, followed by an intramolecular enamination in the presence of 20 mol% of nanocrystalline ZnO. Moderate to high yields, operation simplicity, and cheap starting materials are the key features of the present method. The structures of the products were confirmed by 1H and 13C NMR spectroscopy and mass spectrometry (EI). Probable mechanisms for the present reactions to account for the formation of 2-(N-arylamino)benzaldehydes 3a-h and N-aryl-3,10-dihydroacridin-1(2H)-one derivatives 4a-h are also reported.
N-aryl-3,10-dihydroacridin-1(2H)-ones
2-(N-arylamino)benzaldehydes
ZnO nanoparticles
smiles rearrangement
2017
07
01
252
261
https://icc.journals.pnu.ac.ir/article_2979_5d30686fe2c6b18350da4210f223a489.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
A green synthesis of functionalized thiazol-2(3H)-imine via a three-component tandem reaction in ionic liquid media
Ashraf Sadat
Shahvelayati
Leila
Hajiaghababaei
Akram
Panahi Sarmad
In this research, an efficient synthesis toward 2-(2-((4-Methoxybenzoyl)imino)-4-(4-methoxyphenyl)thiazol-3(2H)-yl)-2-phenylacetic acid via a three-component tandem reaction using aroylisothiocyanate, phenyl glycine, and 4-methoxyphenacyl bromide in an ionic liquid (IL) has been described. 1-Methyl-3-pentylimidazolium bromide (IL) has been employed as a recyclable green solvent. The work-up procedure was fairly simple and the product did not require further purification. The influence of various reaction parameters such as solvent, temperature, and time was examined and among the various solvents such as ethanol, acetonitrile, n-hexane, water, and ionic liquid for synthesis of the final product, the best result was obtained in 1-methyl-3-pentylimidazolium bromide at 50oC for 1 hours.
Thiazol-2(3H)-imine
α-bromoketone
ionic liquid
phenyl glycine
tandem reacrion, aroylisothiocyanate
2017
07
01
262
267
https://icc.journals.pnu.ac.ir/article_2981_ab7768d8ebaf0ca4776462727a454c8b.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
N-methyl pyridinium-p-toluene Sulfonate (NMPyTs) catalyzed synthesis of pyrano[2,3-c]pyrazoles
DR. Vinod
Kamble
Dr. Giribala
Bondle
Dr. Sandeep
Atkore
Abstarct:A simple one-pot synthesis of pyrano[ 2,3-c]pyrazoles was developed by a three-component reaction of various benzaldehydes, malononitrile and 1-phenyl or hydro-3-methyl-1H-pyrazol-5(4H)-one in the presence of N-methyl pyridinium p-toluene sulfonate (NMPyTs) as a catalyst. All of the synthesized compounds were identified by IR, 1H NMR, 13C NMR and mass spectroscopy techniques. In the mentioned method, the use of thermal condition is avoided. The key advantages of this process are high yields, shorter reaction times, easy work-up, and purification of products by the non-chromatographic method. The synthesis of pyrano[2,3-c] pyrazoles using NMPyTs as an efficient catalyst is the novel methodology work.
1-Phenyl-3-methyl-1H-pyrazol-5(4H)-one
pyridine
p-toluene methyl sulfonate
malononitrile
2017
07
01
268
277
https://icc.journals.pnu.ac.ir/article_3603_7b862de36e34fcc84ef09318a0d8f309.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Separation identification and antioxidant evaluation of zingiber officinale essential oil
Ali
Saberi
Mehri
Alimohammadi
Usage of herbal medicine has been under so much attention for many years. They are gradually replacing synthetic drugs in pharmaceutical fields due to their fewer side effects. Nowadays, essential oils are widely used for the treatment of diseases as well as being applied as pesticide. In this study, 32 components of Zingiber essential oil were identified representing 97.42% of the extracted oil by Gas chromatography-mass spectrometry (GC/MS). Antioxidant activity of the extracted oil were evaluated. In this experiment the effect of Zingiber essential oil on oxidation temperature of oleic acid was investigated by using a diffential scanning calorimetric (DSC) instrument.
antioxidant
Identification
essential oil
zingiber officinale
biological activity
2017
07
01
278
285
https://icc.journals.pnu.ac.ir/article_2991_98076eba167bbf287ed54a1633b2eed7.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Application of the extended solvation theory to study the interaction of β-CD with interpolymer of PEO and PAA
Bahman
Vasheghani Farahani
Golamreza
Rezaei Behbahani
Monir
Shalbafan
Thermodynamic study on the interaction of β-CD with poly ethylene oxide and poly acrylic acid was performed by isothermal titration calorimetry at 298K. when β-CD is added to the interpolymer complex, competition is created between host-guest and Hydrogen bond. Enthalpy of interaction between the β-CD and interpolymer complex was calculated using the extended solvation theory. P=1 Shows that willingness of β-CD to interact with both polymers is identical. The positive values of and show that interpolymer complex are stabilized by β-CD . The process is both enthalpy and entropy-driven. The results show that this interaction is exothermic and increases the interpolymer complex stability.
β-CD
poly ethylene oxide
poly acrylic acid
isothermal titration calorimetry
2017
07
01
286
292
https://icc.journals.pnu.ac.ir/article_3001_9ebd31fb599dda5442b5b9c0a45bb17e.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
LaCl3.7H20: An efficient catalyst for one-pot multi-component synthesis of 1,4-polyhydroquinoline derivatives through unsymmetrical Hantzsch reaction
Abhijeet
Somwanshi
Yashwant
Pandit
Akash
Gholap
Rushikesh
Ghogare
Shivaji
Pandit
An efficient one pot multi component synthesis of 1, 4-Polyhydroquinoline derivatives through unsymmetrical Hantzsch reaction using lanthanum chloride heptahydrate (LaCl3.7H2O) from an aromatic aldehyde, ethyl acetoacetate, dimedone and ammonium acetate as a nitrogen precursor in ethanol at room temperature is described. In the present work we report lanthanum chloride heptahydrate remarkably non-toxic in nature and ease of handling we explored the utility of lanthanum chloride as a catalyst for the synthesis of 1, 4-polyhydroquinoline derivatives. We newly report p-N, N-dimethylamino-cinnamaldehyde and m-chlorobenzaldehyde for the synthesis of 1, 4-Polyhydroquinoline derivatives through unsymmetrical Hantzsch reaction and was characterized by IR and 1HNMR spectroscopic methods.
Hantzsch reaction
lanthanum chloride heptahydrate
Polyhydroquinoline derivatives
Aromatic aldehydes
2017
07
01
293
300
https://icc.journals.pnu.ac.ir/article_3614_0ef205c0bfd44c56572961199a15a4f5.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Theoretical study on the mechanism of stable phosphorus ylides derived from 5-aminoindazole in the presence of different dialkyl acetyelenedicarboxylates
Mohammad
Zakarianezhad
Motahare
Shool
In the recent work, the reaction mechanism between triphenylphosphine 1, dialkyl acetylenedicarboxylates 2 in the presence of NH-acid, such as 5-aminoindazole 3 were investigated theoretically. Quantum mechanical studies were performed for evaluation of potential energy surfaces of all structures participated in the reaction mechanism both in gas phase and in dichloromethane. The first step of all reactions was recognized as a rate-determining step in the reaction mechanism. All the possible structures partipated on the reaction coordinate were well predicted. Quantum mechanical calculations were clarified how the ylides exist in solution as a mixture of two geometrical isomers (Z- and E-) as a minor or major forms.
NH-acid
theoretical study
Z- and E-rotamers
5-aminoindazole
triphenylphosphine
2017
07
01
301
307
https://icc.journals.pnu.ac.ir/article_3004_46fcf32e21feb4752648f98e4be54cb3.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
1,3-Dichloro-5,5-dimethyl hydantoin and Poly N,N′-dibromo-N-ethyl naphthyl-2,7-disulfonamide as efficient catalysts for the methoxymethylation of alcohols under solvent-free conditions
Abbas
Amini Manesh
Ardeshir
Khazaei
Maedeh
Gohari
Mahdieh
Chegeni
Shahnaz
Saednia
Methoxymethylation of a variety of alcohols was performed using formaldehyde dimethyl acetal in the presence of 1,3-dichloro-5,5-dimethyl hydantoin [DCDMH] and Poly N,N′-dibromo-N-ethyl naphthyl-2,7-disulfonamide [PBNS] as catalysts at room temperature and under solvent-free conditions. Our experiments show that primary and secondary alcohols can be smoothly converted into the corresponding MOM-ethers in excellent yields. The methoxymethyl ethers (MOM-ethers) were obtained with good to excellent yields. 1,3-Dichloro-5,5-dimethyl hydantoin [DCDMH] and Poly N,N′-dibromo-N-ethyl naphthyl-2,7-disulfonamide [PBNS] effectively catalyzed the methoxymethylation of alcohols with dimethoxymethane at ambient temperature. The notable advantages of this method are mild reaction conditions, high yields, cheapness, safety and eco-friendliness, and recyclability of the catalysts.
Methoxymethylation
alcohols
DCDMH
PBNS
solvent-free conditions
2017
07
01
308
314
https://icc.journals.pnu.ac.ir/article_3024_d86e1acd9727bc7dcd9ab5e6bff99b1c.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Water quality and sedimentary analyses of Siddheshwar dam (India) for assessing irrigational suitability
Parveen
Rajjak Shaikh
Isak
Rajjak Shaikh
Arjun
Bapurao Bhosle
The physico-chemical properties of water and sediments therein were analyzed for assessing the suitability of Siddheshwar dam (India) waters for irrigation purpose. The physical parameters include total dissolved solids and electrical conductivity. The chemical parameters studied include pH, free carbon dioxide, total hardness, calcium hardness, magnesium hardness, phenolphthalein alkalinity, total alkalinity, biochemical oxygen demand and salinity. The present research was undertaken to monitor the irrigational suitability of this water body over the period of June 2009 to May 2010 by Sodium Absorption Ration (SAR), Magnesium Ratio (MR), Residual Sodium Carbonate (RSC), Soluble Sodium Percentage (SSP), Residual Sodium Bicarbonate (RSBC), Kelly’s Ratio (KR) and Permeability Index (PI) parameters. The UV-Spectrophotometer determined the concentrations of heavy metals such as iron, zinc, chromium and manganese. The sediments’ physico-chemical characteristics like temperature, conductivity, pH, % carbon, organic matter and phosphate have been detected by using standard methods. It is observed that the sediments are in a complex milieu with the overlying water in the aquatic ecosystem and they affect water chemistry and get affected by it. The water quality is found good and it is therefore safe for irrigation.
Siddheshwar dam (India)
irrigation water quality
permissible limit
sediment, UV – spectrophotometer
2017
07
01
315
337
https://icc.journals.pnu.ac.ir/article_3678_14db5e07456f6f9c8d22e121e24f3b83.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
H3PW12O40 as an efficient catalyst for one-pot- tricomponent synthesis of chromeno[4,3-b]quinolones under microwave irradiation
Radineh
Motamedi
Sara
Sobhani
Farshid
Barani
Some Chromeno[4,3-b]quinoline derivatives were synthesized in a tricomponents one-pot reaction of 1,3-cyclohexadione arylaldehydes and 4-aminocoumarin under Microwave irradiation in the solventless system by using a heteropolyacid catalyst ,H3[PW12O40] in 80-95% yields and high rates. The shorter reaction times, one-pot, good yields, simple work-up procedure and environmentally friendly conditions are the main advantages of this method compared to the two step method. Heteropolyacid is separated by filtration and the products were purified by flash column chromatography. The reactions were monitored by TLC and subsequent work-up afforded a single compound by TLC in each case. The product was identified by its 1H NMR, mass and IR spectra, which were compared to those reported previously.
Chromeno[4
3-b]quinoline
heteropolyacid
1
4-dihydropyridines
2017
07
01
338
344
https://icc.journals.pnu.ac.ir/article_2882_3c05169724718613ed225d32fd1893ee.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Synthesis, biological and molecular modeling studies of macrocyclic complexes of trivalent metal ions
Vikas
Sangwan
Dharam Pal
Singh
The macrocyclic complexes of biological importance with power transition metals are synthesized by template methodology leading to the formation of the complex [MLX] X2; where L is macrocyclic ligand derived from 3,4-diaminotoluene, 2,4-thiazolidinedione, M=Cr (III) and Fe(III) X is Cl-, CH3COO- or NO3_.Characterisation of these complexes are through with the assistance of elemental analyses(CHN), molar conductance measurements, magnetic susceptiblities measurements and infrared spectral studies. Molecular modelling was done by using Avagadro 1.01 progarm and optimised geometry in which energy calculations of macrocyclic complexes were determined. Synthesised complexes were also screened for their biological activities such as antimicrobial,antifungal and antioxidant activities.
Macrocyclic
antimicrobial
modeling
template methodology
2017
07
01
345
351
https://icc.journals.pnu.ac.ir/article_3763_bbc504965517373ad5fbdd4b2fe02879.pdf
Iranian chemical communication
2423-4958
2423-4958
2017
5
Issue 3, pp. 237-363, Serial No. 16
Reusable Silica supported Perchloric acid and potassium bisulphate as green catalysts for thiocyanation of aromatic compounds under solvent free conditions
Chinna Rajanna
Kamatala
Hemanth Sriram
Y.
Satish Kumar
Mukka
Venkateswarlu
Marri
Touheeth
Fatima
Sai Sudhakar
Mukka
Madhusudan Raju
R.
Reusable silica supported perchloric acid and potassium bisulphate have been prepared and explored as green catalysts for thiocyanation of aromatic compounds under conventional and solvent free microwave assisted conditions. The microwave assisted protocol exhibited remarkable rate accelerations and offered selective thiocyanation of aromatic and hetero aromatic compounds in good yields. Reaction times observed in conventional methods range of 2.0 to 6.0 hours, which reduced to only few minutes (1 to 3 min) in microwave assisted reactions. The developed protocols are also promising and comparable with the existing procedures. Prepared catalysts could be easily recycled for five time with a reproducible efficiency.
Silica supported Potassium bisulfate
silica supported HClO4
ammonium thiocyanate
selective thiocyanation
solvent free microwave assisted reactions
rate accelerations
2017
07
01
352
363
https://icc.journals.pnu.ac.ir/article_3773_daeb0cb9c86f0b5a4ec796a057ce84aa.pdf