Synthesis and characterization of termini azobenzene dendrimer
Omid
Louie
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
author
Abdoulhossien
Massoudi
chemistry department
author
Azar
Agah
chem department.
author
text
article
2013
eng
Some organic molecules can be isomerized upon photoirradiation and when accompanied by a change in the visible absorption spectrum, it is called photochromism. Azobenzenes are important part of molecular machines and nanotechnology, Which are This phenomenon is called photoisomerization Azobenzene (azo) chromophores , and have been incorporated into a wide variety of materials and molecular architectures, including polymers, dendrimers, and molecular glasses. We synthesized and characterized the AB2 type polyamidoamine (PAMAM) dendrimers by single active site. PAMAM diazobenzene dendrimer was synthesized and characterized by FTIR and NMR (1H, 13C) and CHN-O Elementary analysis. The simple method can be used for the synthesis of Azobenzene derivative PAMAM dendrimer and other similar compounds.
Iranian chemical communication
2423-4958
1
v.
Issue 1, pp. 1-82, Serial No.1
no.
2013
1
6
https://icc.journals.pnu.ac.ir/article_457_b818e39a097f05cd63a3dadc1e371708.pdf
Hantzsch reaction using [Mesi]Cl as a new, efficient and BAIL catalyst
Sami
Sajjadifar
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
Hamid
Saeidian
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
Sayeh
Zare
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
Hojat
Veisi
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
Sobahn
Rezayati
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
text
article
2013
eng
In this work, the efficiency, generality and applicability of new Bronsted acidic ionic liquid (BAIL) 1-methyl-3-(2-(sulfooxy)ethyl)-1H-imidazol-3-ium chloride {[Msei]Cl} as heterogeneous and green catalyst for organic transformations are studied. Herein, the following one-pot multi-component reactions in the presence of [Msei]Cl are investigated: (i) the synthesis of quinoxaline derivatives from the reaction of phenylenediamines and 1,2-diketones in EtOH under mild conditions (room temper-ature), (ii) the preparation of 1,4-dihydropyridines from one-pot multi component condensation of 1,3-dicarbonyl compounds, NH4OAcand aldehydes under solvent-free conditions at moderate temperature (90 °C). High yields, relatively short reaction times, efficiency, generality, clean process, simple methodology, low cost, easy work-up, ease of preparation and regeneration of the catalyst and green conditions (in the synthesis of the quinoxaline derivatives) are advantages of the application of [Mesi]Cl as catalyst in the above organic reactions.
Iranian chemical communication
2423-4958
1
v.
Issue 1, pp. 1-82, Serial No.1
no.
2013
7
24
https://icc.journals.pnu.ac.ir/article_458_6b3adeba6687174a8bfccae190f25ef5.pdf
Essential oil composition of Achillea millefolium growing in Darrehshahr township
Javad
Zeinivand
Chemistry Teacher of Education, Darrehshahr, Ilam, Iran.
author
Noorkhoda
Yousefzadeh
Chemistry Teacher of Education, Darrehshahr, Ilam, Iran.
author
text
article
2013
eng
Achillea millefolium belong to the asteraceae family and from genus achillea. In this study essential oils were extracted from all aerial parts via hydro distillation (HD) method by clevenger set . By using of gas chromatography/mass spectrometry ( GC-MS) technique the chemicals component essential oil were identified. About 41 components with were identified which encompassed 97.66 percent of the whole essential oil. The essential oil yields as a result of hydro distillation 0.56 percent (weight/weight) was obtained (it has been based on dried materials). In essential oils Achillea millefolium dihydrocarveol (34.97%), umbelulone (16.65%), 1,8 cineole (14.94%), bornyl acetate (6.08%), chrysanthenyle acetate cis (5.24%), camphene (4.21%), para-cymene (3.29%) and α-pinene (3.24%) were the major identified compounds. The purpose of this study was to identify the constituents of essential oils extracted from plants and also to determine the percentage of each compound in the essential oil of Achillea millefolium used as drug.
Iranian chemical communication
2423-4958
1
v.
Issue 1, pp. 1-82, Serial No.1
no.
2013
25
34
https://icc.journals.pnu.ac.ir/article_453_15c3855bb13508c97e8c03b083de241a.pdf
Ni2+ supported on hydroxyapatite-core@shell γ-Fe2O3 nanoparticles as new and green catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones under solvent-free condition
Eshagh
Rezaee Nezhad
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697, Tehran, Iran
author
Zahra
Abbasi
Department of Chemistry, Payame Noor University, PB BOX 19395-4697 Tehran, Iran
author
Mojtaba
Rahimi Moghaddam
Department of Chemistry, Payame Noor University, PB BOX 19395-4697 Tehran, Iran
author
Mohammad Ali
Attaei
Department of Chemistry, Payame Noor University, PB BOX 19395-4697 Tehran, Iran
author
text
article
2013
eng
The aim of this research is to study Ni2+ supported on hydroxyapatite-core-shell magnetic γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Ni2+) as a green and recyclable catalyst for the Biginelli reaction under solvent-free conditions. One-pot multi-component condensation of 1,3-dicarbonyl compounds, urea and aldehydes at 80 oC affords the corresponding compounds in high yields and in short reaction times using γ-Fe2O3@HAp-Ni2+. The catalyst can be readily isolated using an external magnet and no obvious loss of activity was observed when the catalyst was reused in seven consecutive runs. The mean size and the surface morphology of the nanoparticles were characterized by transmission electron microscopy, scanning electron microscope, vibrating sample magnetometry, X-ray powder diffraction and Fourier transform infrared techniques.
Iranian chemical communication
2423-4958
1
v.
Issue 1, pp. 1-82, Serial No.1
no.
2013
35
42
https://icc.journals.pnu.ac.ir/article_454_39290d1ca6228404e15f6dcecd958159.pdf
A mild and efficient procedure for the synthesis of ethers from various alkyl halides
Mosstafa
Kazemia
Bashgah Pajouheshgaran Javan, Islamic Azad University of Ilam, P.O. Box 447, Ilam, Iran
author
Zahra
Noori
Department of Chemistry, Tehran University, P.O. Box 4111, Tehran, Iran
author
Homa
Kohzadi
Bashgah Pajouheshgaran Javan, Islamic Azad University of Ilam, P.O. Box 447, Ilam, Iran
author
Mohsen
Sayadia
Bashgah Pajouheshgaran Javan, Islamic Azad University of Ilam, P.O. Box 447, Ilam, Iran
author
Amin
Kazemia
Bashgah Pajouheshgaran Javan, Islamic Azad University of Ilam, P.O. Box 447, Ilam, Iran
author
text
article
2013
eng
A simple, mild and practical procedure has been developed for the synthesis of symmetrical and unsymmetrical ethers by using DMSO, TBAI in the presence of K2CO3. We extended the utility of Potassium carbonate as an efficient base for the preparation of ethers. A wide range of alkyl aryl and dialkyl ethers are synthesized from treatment of aliphatic alcohols and phenols with various alkyl halides in the presence of efficient base Potassium carbonate. Secondary alkyl halides were easily converted to corresponding ethers in relatively good yields . This is a mild, simple and practical procedure for the preparation of ethers in high yields and suitable times under mild condition.
Iranian chemical communication
2423-4958
1
v.
Issue 1, pp. 1-82, Serial No.1
no.
2013
43
50
https://icc.journals.pnu.ac.ir/article_455_69f6e377296f2794837bb61e2e48b68f.pdf
1,3-Dibromo-5,5-dimethylhydantoin: a versatile catalyst for synthesis of 3,3-bis(indolyl)oxindoles
Seyyedeh Fatemeh
Hojatia
Department of Chemistry, School of Science, Hakim Sabzevari University, Sabzevar, 9617976487, Iran
author
Kobra
Nikoofar
Department of Chemistry, School of Science, Alzahra University, Vanak, Tehran, 1993891176, Iran
author
Zahra
Etemadifara
Department of Chemistry, School of Science, Hakim Sabzevari University, Sabzevar, 9617976487, Iran
author
text
article
2013
eng
A condensation of various isatins with indole derivatives has been carried out in the presence of 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) as catalyst at 50 °C in ethanol in order to form 3,3-bis(indolyl) oxindoles. The products were obtained within 20-90 min by 70-96% yields. The efficacy of the procedure has been confirmed by catalyzing the condensation reaction of pyrrole which was used as another sort of heterocycle with indole to obtain its corresponding 3,3-bis(2-pyrrolyl)oxinole. A plausible mechanism of the condensation based on DBDMH activating role has also been proposed. DBDMH is an effective, commercially available, insensitive to moisture and easily handling catalyst. Simple procedure, easy work-up, mild reaction conditions, high yields and short reaction times are the highlighted points of reported method.
Iranian chemical communication
2423-4958
1
v.
Issue 1, pp. 1-82, Serial No.1
no.
2013
51
58
https://icc.journals.pnu.ac.ir/article_465_c4099a20c627bfddb188af83da50a9a3.pdf
Theoretical models for determination of weight percent of PHCS-g-PLLA co polymer using experimental data
Omid
Louie
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
author
Abdolhossein
Massoudi
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
Soodabeh
Ramezani
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
text
article
2013
eng
The amphiphilic graft copolymer using chitosan (CS) as hydrophilic segment and poly (L-lactic acid) (PLLA) as hydrophobic segment, was prepared through a protection-graft-de protection route. Chitosan is a polysaccharide comprising of copolymers of glucosamine and N-acetyl glucosamine. Chitosan is the deacetylated derivative of chitin, which is one of the most abundant natural polysaccharides containing nitrogen .A simple and convenient procedure for chemo selectively protecting the amino groups of CS was developed to provide N-phthaloyl-chitosan (PHCS) that is indispensable as a soluble N-protected precursor for further controlled modification reaction of CS. The Weight percent PHCS-g-PLLA copolymer determined by the theoretical Models based on experimental datas.It was low error regression in new models.
Iranian chemical communication
2423-4958
1
v.
Issue 1, pp. 1-82, Serial No.1
no.
2013
59
68
https://icc.journals.pnu.ac.ir/article_480_6990320dde06d86a80bff24bd21faa82.pdf
Application of dimeric and monomeric ortho-palladated complexes as an efficient catalysts for Heck cross-coupling reaction
Ali
Naghipour
Department of Chemistry, Faculty of science, Ilam University, Ilam, 69315-516, Iran
author
Mohsen
Sayadi
Department of Chemistry, Faculty of science, Ilam University, Ilam, 69315-516, Iran
author
Mojdeh
Hashemi
Department of Chemistry, Faculty of science, Ilam University, Ilam, 69315-516, Iran
author
Mosstafa
Kazemi
Bashgah Pajouheshgaran Javan, Islamic Azad University of Ilam, P.O. Box 447, Ilam, Iran
author
text
article
2013
eng
The catalytic acvtivity of dimeric and monomeric ortho-palladated complexes [Pd{C6H2(CH2NH2-(OMe)2,3,4}(µ-Cl)]2)2) and [Pd{C6H2(CH2NH2-(OMe)2,3,4}Cl(PPh3)](3), was investigated in Heck cross-coupling reaction. These complexes are more active and efficient catalysts for Heck cross-coupling reaction. The palladium complexes 2 and 3 is employed in the Heck cross-coupling reaction between styrene and acrylate with several aryl halides. High yields of corresponding C–C products, low catalyst loadings, mild reaction conditions and short reaction times are important features of these homogeneous reactions. The cross-coupled products were produced in high yields using catalytic amounts of [Pd{C6H2(CH2NH2-(OMe)2,3,4}(µ-Cl)]2 or [Pd{C6H2(CH2NH2-(OMe)2,3,4}Cl(PPh3)] as a thermally stable and oxygen insensitive complexes in NMP at 130 ºC.
Iranian chemical communication
2423-4958
1
v.
Issue 1, pp. 1-82, Serial No.1
no.
2013
69
82
https://icc.journals.pnu.ac.ir/article_489_37b78632ce1655c08fa5900ede3e1827.pdf