@article { author = {Nasseri, Mohammad Ali and Behravesh, Soheila and Allahresani, Ali}, title = {Essential oil composition of Cleome heratensis (Capparaceae) at different growing stages}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {364-371}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {In this study, the essential oil content in the aerial parts of Cleome heratensis which is growing in the east of Iran was investigated. The aerial parts of the plant were collected from the late August to October 2014, for a total of four harvests (S1-S4). Essential oils were isolated by hydro-distillation. The oils were analyzed by GC-FID and 30 constituents, representing 84.93-92.9 % of the total compositions of the oil were identified. The major components of the essential oil in the four harvests were hexanal (7.57%-33.96%), α-phellandrene (6.08% -13.17%), α-farnesen (7.54%-10.9%), methyl eugenol (6.74%-8.31%), eugenol (3.94%-7.4%), verbenone (3.98%-6.24%), myrcene (1.54%-5.75%), hexadecane (2.34%-4.82%), linalool (1.59% - 3.53%) and α-humulene (1.01%-1.93%). The findings indicated That the main component groups of oil are monoterpenoids (11.83–19.29%), oxygenated monoterpens (10.34–16.96%), sesquiterpenoids (10.67–20%) and oxygenated sesquiterpenes (0–4.34%) which are obviously increased during the growing stages. Monoterpenoids were higher during the late flowering stage (S3), but oxygenated monoterpens were observed to be slightly lower in this stage. Monoterpens are slightly higher during development stages.}, keywords = {Cleome heratensis,essential oils,hydro-distillation,Capparaceae,different growing stages}, url = {https://icc.journals.pnu.ac.ir/article_2992.html}, eprint = {https://icc.journals.pnu.ac.ir/article_2992_890150b5258342b55bb08a49b5f955c6.pdf} } @article { author = {Elmi, Fatemeh and Hadipour, Nasser}, title = {A theoretical study on quadrupole coupling parameters of HRPII Protein modeled as 310-helix & α-helix structures}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {372-380}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {A fragment of Histidine rich protein II (HRP II 215-236) was investigated by 14N and 17O electric field gradient, EFG, tensor calculations using DFT. This study is intended to explore the differences between 310-helix and α-helix of HRPII both in the gas phase and in solution. To achieve the aims, the 17O and 14N NQR parameters of a fragment of HRPII (215-236) for both structures are calculated. Due to the side chain arrangements of the 310-helix, this conformation contains several hydrogen bonding contacts in comparison to the α-helix form. The resultant 14N and 17O s of peptide bonds of HRPII are affected by these contacts. Both in the gas phase and in solution, the differences in 14N s of backbone are within the uncertainties identical between two conformers but not for NH groups of backbone that the related amino acids participate in intramolecular hydrogen bond formation with side chain. In this case, the differences in 14N of backbone are avg.= 0.36 in gas phase and avg.= 0.43MHz in solution. However, differences in 17O parameters of the backbone C=O are distinguishable between two conformers, regardless of in gas phase and in solution, with and without influencing of the intramolecular hydrogen bond. These differences reveal how hydrogen bond interactions affect EFG tensors at the sites of oxygen and nitrogen nuclei.}, keywords = {Histidine rich protein II,17O and 14N NQR,DFT,hydrogen bond}, url = {https://icc.journals.pnu.ac.ir/article_2993.html}, eprint = {https://icc.journals.pnu.ac.ir/article_2993_22ecafc7fd947d3ee70ccb838b061f32.pdf} } @article { author = {Rajendran, Venugopal and Selvaraj, Varathan and Harikumar, Kuppusamy}, title = {Ultrasound assisted dichlorocarbene addition to 1,3-bis(allyloxy)-5-methylbenzene under biphasic condition: A kinetic study}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {381-396}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {A new multi-site phase-transfer catalyst (MPTC), viz., N,N’-dioctyl-4,4’-bipyridium dibromide containing bi-site was prepared and proved by FT-IR, 1H NMR, 13C NMR, mass and elemental analysis. The enhancement of C-N+ peak intensity at 1179 cm−1 noticed in FT-IR, the agreement of m/z values, viz., 542.43 bi-site respectively with their theoretical values and the percentage of C, H, N elements noticed in elemental analysis has strongly supported the presence of tri-site MPTC catalysts. Further, the presence of number of active-sites in the catalyst was again confirmed by determining their pseudo-first order rate constant for dichlorocarbene addition to 1,3-bis(allyloxy)-5-methylbenzene in the presence of ultrasonic irradiation/mechanical stirring. The comparative study reveals that the kapp determined with the combination of ultrasound and mechanical stirring has shown more activity than with their individual effect. Further, the detailed kinetic study performed with superior di-site MPTC reveals that the kapp are dependent with the stirring speed, [substrate], [catalyst], [NaOH] and temperature. Based on the kinetic results, thermodynamic parameters are evaluated.}, keywords = {Ultrasound irradiation,dichlorocarbene,phase-transfer catalysis,kinetic Study}, url = {https://icc.journals.pnu.ac.ir/article_3923.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3923_8a6690f1444e25fded1e7eaf38438ed8.pdf} } @article { author = {Rezaiati, Mohammad and Salimi, Farhad and Karami, Changiz}, title = {Determination of trace amounts of chromium ions in water and food samples using ligand-less solid phase extraction-based modified nano-boehmite(AlOOH)}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {397-406}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {Chromium is one of the hazardous pollutants in industrial effluents. In this study, a new nano-boehmite modified with sodium dodecyl sulphate is developed for preconcentration trace amounts of chromium ions as a prior step to its determination by flame atomic absorption spectrometry. We investigated the effect of various parameters on the recovery of the analyte ions, including pH of sample solution, amount of sorbent, sample volume on extraction efficiency of the chromium ions. Under the best experimental conditions, the calibration curve was linear in the range of 1.0 -700.0 ng.mL-1 of chromium with R2 = 0.997. Detection limit was 0.6 ng.mL-1 in the original solution (3Sb/m) and the relative standard deviation for seven replicate determination of 0.5 µg.mL-1 chromium was ±2.4%. The developed method was successfully applied to the extraction and determination of chromium in water and food samples with satisfactory results.}, keywords = {solid phase extraction,Preconcentration,nano boehmite,chromium,flame atomic absorption spectrometry}, url = {https://icc.journals.pnu.ac.ir/article_3006.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3006_40768f80bcb4129a1bf181a49d26cd24.pdf} } @article { author = {Karimi-Jaberi, Zahed and Fereydoonnezhad, Abdolhossein}, title = {One-pot, organocatalytic synthesis of spirooxindoles using citric acid in aqueous media}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {407-416}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {Spirooxindoles are important synthetic targets possessing extended biological activity and drug discovery applications.The development of multicomponent reactions designed to produce elaborate biologically active compounds has become an important area of research in organic, combinatorial, and medicinal chemistry. in this Manuscript, a facile and efficient multicomponent synthesis of functionalized spirooxindoles has been described through the reaction of isatin, malononitrile or ethyl cyanoacetate, and CH- acids (1,3-dicarbonyl compounds) in the presence of catalytic amount of citric acid in excellent yields with short reaction times in aqueous ethanol. Also citric acid catalyzed synthesis of 3,3-diindolyl oxindoles by the condensation of isatin with substituted indoles.}, keywords = {isatin,malononitrile,indole,spirooxindoles,citric acid}, url = {https://icc.journals.pnu.ac.ir/article_3007.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3007_2e75351bb2f24b8e0e2072815dc00c74.pdf} } @article { author = {Patil, Sandip and Mahajan, Vilas and Sonawane, Gunvant and Shrivastava, Vinod}, title = {Kinetics of photocatalytic degradation of methylene blue by ZnO-bentonite nanocomposite}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {417-428}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {The present study reports, the synthesis of ZnO-bentonite nanocomposite by the incorporation of ZnO with bentonite clay. The nanocomposite was characterised by XRD and SEM. ZnO-bentonite was effectively used for removal of Methylene Blue (MB). Removal of MB takes place by photocatalytic degradation and adsorption. Photocatalytic degradation of MB occurs by advanced oxidation process. The factors affecting photocatalytic degradation like pH, initial dye concentration, contact time and photocatalyst dose are investigated. Optimum pH was 8 and contact time was 80 min for photocatalytic degradation of MB. The kinetic study shows that adsorption follows pseudo-second-order kinetics. Adsorption was also described by Langmuir and Freundlich isotherms. Adsorption isotherm found to follow Langmuir isotherm. The monolayer coverage capacity was observed to be 62.5 mg/g. The amount of dye adsorbed was 252.7 mg/g for 0.2 g/L photocatalyst dose at 60mg/L MB concentration.}, keywords = {Methylene Blue,photocatalytic degradation,ZnO-bentonite,advanced oxidation process}, url = {https://icc.journals.pnu.ac.ir/article_3932.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3932_11f8d1330ecd4d60e6429cf8f2b61fad.pdf} } @article { author = {Mostaghni, Fatemeh and Daneshvar, Ali and Sakhaie, Majid}, title = {Green synthesis of nano size CoFe2O4 using Chenopodium album leaf extract for photo degradation of organic pollutants}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {429-435}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {Green synthesis of nanoparticles makes use of environmental friendly, non-toxic and safe reagents. In this study, we synthesised CoFe2O4 in a green approach, using leaf extract of Chenopodium album. The structure of the synthesised sample were analyzed by X-ray diffraction methods. The synthesised Photocatalyst was applied for photo degradation of methy orange as a reliable model pollutant. The results indicated that CoFe2O4 exhibited good efficiency for the degradation of MO under UV light irradiation; the degradation ratio reached to 100% after 3 h irradiation. In addition, easy separation of the catalysts from the treated wastewater by magnetic separation, makes it available for flow-bed technologies.}, keywords = {Photo degradation,Chenopodium album,Magnetic nanoparticles,spinel}, url = {https://icc.journals.pnu.ac.ir/article_3022.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3022_94f767f0bce96c8a1b8450ec051c8b36.pdf} } @article { author = {Sajadikhah, Seyed Sajad and Zarei, Mahboubeh}, title = {Green and efficient synthesis of functionalized 3-amino-2-oxofuranes using trityl chloride}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {436-441}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {Extremely facile and efficient procedure has been developed for the synthesis of alkyl 2,5-dihydro-2-oxo-5-aryl-3-(arylamino) furan-4-carboxylate in the presence of trityl chloride (TrCl) as an organic catalyst in ethanol at ambient temperature. One-pot three-component reaction of aromatic amines, dimethyl and/or diethyl acetylenedicarboxylates and aryl aldehydes offorded the corossponding 3-amino-2-oxofurane derivatives in good to high yields. The presented method offers several advantages such as green and mild conditions, simplicity of operation, non-toxicity of the catalyst and high atom economy. Moreover, the products were obtained through simple filtering and no need to column chromatography, which reduces the waste as well as environmental pollutions.}, keywords = {Heterocycle,3-amino-2-oxofurane,trityl chloride,dialkyl acetylenedicarboxylate}, url = {https://icc.journals.pnu.ac.ir/article_3069.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3069_cdfc3ae0c71502851c226ea26717d6d1.pdf} } @article { author = {Motamedi, Radineh and Rezanejade Bardajee, Ghasem and Shakeri, Somaye}, title = {Cu(II)-Schiff base/SBA-15 as an efficient catalyst for synthesis of chromeno [4′,3′-b]pyrano[6,5-b]quinoline derivatives}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {442-448}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {Some chromeno[4′,3′-b]pyrano[6,5-b]quinoline derivatives were synthesized by condensation of 2-amino-4-aryl-3-cyano-5-oxo-4H, 5H -pyrano-[3,2-c] chromenes and 1,3-cyclohexanedione in an environmentally benign and efficient method by Cu(II)-Schiff base/SBA-15 as an environmentally friendly heterogeneous and recyclable catalyst under solvent-free conditions in high yields and rates. These kinds of catalysts are built from mesoporous silica SBA-15 which was covalently anchored with Cu(II) Schiff base complex. The shorter reaction times, good yields, simple work-up procedure and environmentally friendly conditions are the main advantages of this method compared to the last one. The product was identified by its 1H NMR, mass and IR spectra, which were compared to those reported previously.}, keywords = {Chromeno-pyranoquinolines,coumarin heteroanalougs,malononitrile,Cu(II)-Schiff base/SBA-15}, url = {https://icc.journals.pnu.ac.ir/article_3175.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3175_bb1f429352bafc7c7cb66627a5f6634a.pdf} } @article { author = {Ramazani, Ali and Sheikhi, Masoome Sheikhi and Souldozi, Ali and Joo, Sang Woo and Yahyaei, Hooriye}, title = {Synthesis, spectroscopic (NMR and FT-IR) and theoretical (HF and DFT) investigation of dimethyl (Z)-2-[(2-methyl-5-oxo-1-cyclopentyl)oxy]-2-butendioate}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {449-470}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {Dimethyl (z)-2-[(2-methyl-5-oxo-1-cyclopentyl)oxy]-2-butenedioate has been synthesized using one-pot three component reaction between N-isocyaniminotriphenylphosphorane (Ph3PNNC), 3-methylcyclopentene-1,2-dione and dimethyl acetylenedicarboxylate. Also, optimized geometry and nuclear magnetic resonance ( NMR ) of the title compound are evaluated using HF and B3LYP methods and 6-311+G(d) basis set. Moreover, the 1H and 13C NMR chemical shift values of the molecule are calculated and compared with experimental results. Frontier molecular orbitals (FMOs), total density of states (DOS), electronic properties, natural charges, NMR parameters and NBO analysis for product were calculated by theoretical calculations. Finally, molecular electrostatic potential (MEP) surface is obtained for understanding the active regions of molecule.}, keywords = {N-Isocyaniminotriphenylphosphorane (Ph3PNNC),one-pot,DFT,NBO analysis,electronic properties}, url = {https://icc.journals.pnu.ac.ir/article_3897.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3897_60885bf15513a25ec99660fbef404af3.pdf} } @article { author = {Davarpanah, Jamal and Zafarpour, Afzal and Tayebi, Behrooz}, title = {Silica bonded n-propyl-1,3,5-triazine-2,4,6-triamine as a basic catalyst for synthesis of arylmethylenemalononitrile and pyran annulated heterocyclic compounds}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {471-483}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {In the present research, silica bonded n-propyl-1,3,5-triazine-2,4,6-triamine (SPTT) was synthesized by direct incorporation of chloropropyl groups through co-condensation of tetraethyl orthosilicate (TEOS) and 3-chloropropyl trimethoxysilane (CPTMS) and subsequent grafting the melamine onto the propyl groups via simple nucleophilic substitution reaction. The catalyst has been characterized by fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). The catalytic activity of catalyst was probed through synthesis of arylmethylenemalononitrile and pyran annulated heterocyclic compounds.The catalytic activity of catalyst was probed through synthesis of arylmethylenemalononitrile and pyran annulated heterocyclic compounds.The catalytic activity of catalyst was probed through synthesis of arylmethylenemalononitrile and pyran annulated heterocyclic compounds.}, keywords = {Melamine,arylmethylenemalononitrile compounds,pyran heterocyclic compounds,functionalized silica catalyst}, url = {https://icc.journals.pnu.ac.ir/article_3195.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3195_ace03c7e8c03f0e794946ccf76c8ca1c.pdf} } @article { author = {Beyki, Monire and Fallah-Mehrjardi, Mehdi}, title = {Fe3O4@SiO2-SO3H as a recyclable heterogeneous nanomagnetic catalyst for the one-pot synthesis of substituted quinolines via Friedländer heteroannulation under solvent-free conditions}, journal = {Iranian chemical communication}, volume = {5}, number = {Issue 4, pp. 364-493, Serial No. 17}, pages = {484-493}, year = {2017}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {An efficient method has been developed for the Friedländer synthesis of substituted quinolines through a condensation reaction of 2-aminoaryl ketones with α-methylene ketones in the presence of a catalytic amount of nano Fe3O4@SiO2-SO3H under solvent-free conditions at 110 °C. The reactions are completed in short times, and the products are obtained in good to excellent yields. The results revealed several advantages to our procedure, including high product yields, short reaction time, facile work-up procedure, simplicity in operation, eco-friendly reaction conditions, reusability of the catalyst and green aspects by avoiding toxic catalysts and solvents. The catalyst could simply be separated and recovered from the reaction mixture by an external magnet and reused in subsequent reactions without significant loss in activity.}, keywords = {Fe3O4@SiO2-SO3H,quinolines,Friedländer reaction,solvent-free,recyclable nanomagnetic catalyst,green chemistry}, url = {https://icc.journals.pnu.ac.ir/article_3238.html}, eprint = {https://icc.journals.pnu.ac.ir/article_3238_ad582f6f7a98e14f7aa1cc1a0639bc78.pdf} }