@article { author = {Zare, Abdolkarim and Monfared, Fatemeh}, title = {Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions}, journal = {Iranian chemical communication}, volume = {2}, number = {Issue 1, pp. 1-81, Serial No. 2}, pages = {1-17}, year = {2014}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {Melamine trisulfonic acid (MTSA) is utilized as a highly efficient catalyst for the solvent-free condensation reaction of 2-naphthol (2 eq.) with arylaldehydes (1 eq.) under conventional thermal as well as microwave conditions to give the d}, keywords = {14-Aryl-14H-dibenzo[a,j]xanthene,melamine trisulfonic acid (MTSA),2-naphtol,arylaldehyde,solvent-free,microwave}, url = {https://icc.journals.pnu.ac.ir/article_488.html}, eprint = {https://icc.journals.pnu.ac.ir/article_488_f3833fe36a88efe12dbf0239d50db239.pdf} } @article { author = {Soleimany, Mehdi and Lari, Jalil and Vahedi, Hooshang}, title = {Synthesis and characterization of derived imines from 4-imino-5,6,7,8-tetrahydro-1-benzothieno[2,3-d]pyrimidin-3(4H)-amine}, journal = {Iranian chemical communication}, volume = {2}, number = {Issue 1, pp. 1-81, Serial No. 2}, pages = {18-26}, year = {2014}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {The synthesis and characterization of derived imines from 4-imino-5,6,7,8-tetrahydro-1-benzo thieno[2,3-d]pyrimidin-3(4H)-amine 3 has been developed in 3 steps through the reaction of heteroaromatic o-aminonitrile 1 with triethyl orthoformate afforded the corresponding imido ester 2 followed by cyclization with hydrazine hydrate to furnish iminothienopyrimidineamine 3 and finally the imination of 3 at room temperature with aromatic aldehydes was generated the corresponding imines (5a-5h). The new products were obtained in high yield with an easy work-up in simple reaction along with the puriļ¬cation of products by non-chromatographic method. This general synthetic procedure can be extended to the preparation of wide variety of imines using o-aminonitrile bifunctional derivatives which synthesized by Gewald reaction.}, keywords = {N-(Arylmethylene)-4-imino-5,6,7,8-tetrahydro-1-benzothieno[2,3-d]pyrimidin-3(4H)-amines}, url = {https://icc.journals.pnu.ac.ir/article_492.html}, eprint = {https://icc.journals.pnu.ac.ir/article_492_186c53cdd736436899a4c3b08cddee08.pdf} } @article { author = {Veisi, Hojat and Kordestani, Davood and Sajjadifar, Sami and Hamelian, Mona}, title = {Catalytic application of an organosuperbase denderon grafted on mesoporous SBA-15 and related palladium complex in the aerobic oxidation of alcohols}, journal = {Iranian chemical communication}, volume = {2}, number = {Issue 1, pp. 1-81, Serial No. 2}, pages = {27-33}, year = {2014}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {An efficient synthetic method for successful synthesis of amine denderon on SBA-15 and related Pd (II) complex has been developed. This modified mesoporous material was characterized by various techniques such as TEM, XRD, atomic absorption spectroscopy, N2 adsorption-desorption, and FT-IR. The catalytic activities of the prepared catalysts were investigated by employing aerobic oxidation of alcohols as model reactions. The yields of the products were in the range from 75% to 92%. The catalyst can be readily recovered and reused at least 5 consecutive cycles without significant leaching and loss its catalytic activity. Organosuperbase, SBA-15, Palladium complex, Oxidation Organosuperbase, SBA-15, Palladium complex, Oxidation}, keywords = {Organosuperbase,SBA-15,palladium complex,Oxidation}, url = {https://icc.journals.pnu.ac.ir/article_606.html}, eprint = {https://icc.journals.pnu.ac.ir/article_606_232ead21dad73fccd43474dbe055ffc0.pdf} } @article { author = {Mahkam, Mehrdad and Nabati, Mehdi and Rahbar Kafshboran, Hadieh}, title = {Isolation, identification and characterization of lawsone from henna leaves powder with soxhlet technique}, journal = {Iranian chemical communication}, volume = {2}, number = {Issue 1, pp. 1-81, Serial No. 2}, pages = {34-38}, year = {2014}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {Lawsone a natural pigment present in the henna leaves has been used as a skin and hair dye since 1400 BC. The concentration of this natural compound in leaves varies from place to place depending upon many of the environmental factors and the highest quantity reported so far is about 1% of the dry mass. Heretofore, it has been reported that natural colored extracts and isolate from Henna leaves with many methods such as maceration, digestion, microwave and infusion. In this paper, regarding the therapeutic effects and traditional applications of henna, it was tried to isolate and characterize Lawsone from the henna leaves marketed in Tabriz city of Iran by soxhlet extraction technique in methanol solvent. The advantage of this technique is the isolation of large amounts of lawsone (720 mg from 40 g henne leaves powder) with smaller quantity of methanol.}, keywords = {henna,Lawsonia inermis L,lawsone,isolation,soxhlet extractor}, url = {https://icc.journals.pnu.ac.ir/article_675.html}, eprint = {https://icc.journals.pnu.ac.ir/article_675_6773170b4fb967bad8b5e7ca9e0cc69f.pdf} } @article { author = {Kazemi, Mostafa and Kohzadi, Homa and Noori, Zahra}, title = {Potassium carbonate: a highly efficient catalyst for the acylation of alcohols, phenols and thiols under mild conditions}, journal = {Iranian chemical communication}, volume = {2}, number = {Issue 1, pp. 1-81, Serial No. 2}, pages = {39-47}, year = {2014}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {A general, mild and efficient protocol has been developed for the synthesis of esters and thioesters. The process has been taking place using tetra n-butylammonium iodide (TBAI) as a phase-transfer catalyst and in the presence of potassium carbonate (K2CO3). A wide range of esters and thioesters was prepared in high yields and suitable times by the treatment of alcohols, phenols and thiols with acetic anhydride. Acylation reactions of a number of alcohols, phenols and thiols with acetic anhydride demonstrated that Potassium carbonate is a convenient and efficient catalyst for the synthesis of esters and thioesters. This is a mild, general and practical procedure for the synthesis of esters and thioesters in high yields and suitable times.}, keywords = {acylation,esters,thioesters,tetra n-butylammonium iodide,potassium carbonate,acetic anhydride}, url = {https://icc.journals.pnu.ac.ir/article_542.html}, eprint = {https://icc.journals.pnu.ac.ir/article_542_088325fa856bf1ad1710d93c6864e879.pdf} } @article { author = {Narimani, Hojat and kazemi, Mostafa and Kohzadi, Homa}, title = {A practical and convenient method for the synthesis of anesthetic drug thiopental: using thiourea and sodium ethoxide}, journal = {Iranian chemical communication}, volume = {2}, number = {Issue 1, pp. 1-81, Serial No. 2}, pages = {48-55}, year = {2014}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {A general, simple, practical and convenient method has been described for the synthesis of anesthetic drug thiopental using thiourea in the presence of sodium ethoxide. Anesthetic drug of thiopental was prepared in two stages; during the first stage, the alkylation of mthyl cyanoacetate was performed which was then to be followed by cyclization. Alkylation of methyl cyanoacetate which was performed by 2-iodopentane in the presence of sodium ethoxide reacts with thiourea and then the process was followed by thiopental prepration in excellent yield. Some important aspects of this methodology are the high reactivity of the substrates, avoidance of the use of hazardous solvents, simplicity of the product separation, low cost of the substrates and reagents and high yield of product. This is a applicable and efficient method for the preparation of thiopental anesthesia in high yield and in an appropriate time.}, keywords = {Thiopental,drug,anesthetic,mthyl cyanoacetate,thiourea,Synthesis}, url = {https://icc.journals.pnu.ac.ir/article_543.html}, eprint = {https://icc.journals.pnu.ac.ir/article_543_3a825ec06b6f8b60be3a9450b03ab821.pdf} } @article { author = {Esmaeilpoor, Sharmin and Shirzadi, Zahra and noorizadeh, Hadi}, title = {An improved structure models to explain retention behavior of atmospheric nanoparticles}, journal = {Iranian chemical communication}, volume = {2}, number = {Issue 1, pp. 1-81, Serial No. 2}, pages = {56-71}, year = {2014}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {The quantitative structure-retention relationship (QSRR) of nanoparticles in roadside atmosphere against the comprehensive two-dimensional gas chromatography which was coupled to high-resolution time-of-flight mass spectrometry was studied. The genetic algorithm (GA) was employed to select the variables that resulted in the best-fitted models. After the variables were selected, the linear multivariate regressions [e.g. the partial least squares (PLS)] as well as the nonlinear regressions [e.g. the kernel PLS (KPLS) and Levenberg- Marquardt artificial neural network (L-M ANN)] were utilized to construct the linear and nonlinear QSRR models. The correlation coefficient cross validation (Q2) and relative error for test set L-M ANN model are 0.939 and 4.89, respectively. The resulting data indicated that L-M ANN could be used as a powerful modeling tool for the QSPR studies.}, keywords = {Atmospheric nanoparticles,QSRR,GA-KPLS,Levenberg -Marquardt artificial neural network}, url = {https://icc.journals.pnu.ac.ir/article_595.html}, eprint = {https://icc.journals.pnu.ac.ir/article_595_f910d1f7f33307691bcc05e273d00314.pdf} } @article { author = {Rezayati, Sobhan and Erfani, Zahra and Rezayati, Saman and Hajinasiri, Rahimeh and Rekavandi, Marzieh}, title = {Dipyridine cobalt chloride as an efficient and chemoselective catalyst for the synthesis of 1,1-diacetates under solvent-free conditions}, journal = {Iranian chemical communication}, volume = {2}, number = {Issue 1, pp. 1-81, Serial No. 2}, pages = {72-81}, year = {2014}, publisher = {}, issn = {2423-4958}, eissn = {2345-4806}, doi = {}, abstract = {1,1-Diacetates(acylals) were prepared by direct condensation of various aldehydes with acetic anhydride using dipyridine cobalt chloride (CoPy2Cl2) as an efficient and green catalyst under solvent-free conditions at room temperature. The important features of this catalyst method are that the catalyst is solid, stable at high temperatures, soluble in water, stable in air, immiscible in common organic solvents, low toxic and, above all, it is reusable. CoPy2Cl2 can be recycled after a simple work-up and reused at least five runs without appreciable loss of its catalytic activity. High chemo-selectivity toward aldehyde in the presence of ketones is another advantage of the present method which provides selective protection of aldehydes in their mixtures with ketones.}, keywords = {CoPy2Cl2,acylation,Protection,solvent-free conditions,carbonyl protection}, url = {https://icc.journals.pnu.ac.ir/article_593.html}, eprint = {https://icc.journals.pnu.ac.ir/article_593_93d9aa62e6d3605e44ac3825d639af9f.pdf} }