eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
1
5
10.30492/ijcce.2000.10204
10204
Spectroscopic Study of the Complexation of Meso-Tetraphenylporphyrin with -Acceptors DDQ and TCNE in Chloroform Solution
Elham Eslami
1
Dariush Mohajer
2
Mojtaba Shamsipur
mshamsipur@yahoo.com
3
Department of Chemistry, Shiraz University, Shiraz, I.R. IRAN
Department of Chemistry, Shiraz University, Shiraz, I.R. IRAN
Department of Chemistry, Razi University, Kermanshah, I.R. IRAN
Formation of the molecular complexes between meso-tetraphenylporphyrin (TPP) and the p-acceptors 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) and tetracyanothylene (TCNE) in chloroform solution was investigated spectrophotometrically. The formation constants of the resulting 1:1 molecular complexes were determined using the Benesi-Hildebrand and Nash methods. The TPP-DDQ proved to be more stable than TPP-TCNE complex. The resulting molecular complexes were isolated in crystalline form and characterized.
https://ijcce.ac.ir/article_10204_2a74481859830c3a10f6a7a4fad2eebe.pdf
Molecular complexes
Stoichiometry
stability
Spectrophotometry
IR
Tetraphenylporphyrin
DDQ
TCNE
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
6
12
10.30492/ijcce.2000.10199
10199
Efficient Synthesis of a Range of Benzosubstituted Macrocyclic Diamides
Hashem Sharghi
1
Ahmad Reza Massah
2
Khodabakhsh Niknam
3
Department of Chemistry, Shiraz University, Zip code 71454, Shiraz, I.R. IRAN
Department of Chemistry, Shiraz University, Zip code 71454, Shiraz, I.R. IRAN
Department of Chemistry, Shiraz University, Zip code 71454, Shiraz, I.R. IRAN
Some new macrocyclic dibenzotetraoxadiamides, tribenzotetraoxadimides, tribenzopentaoxadiamide, tribenzohexaoxadiamide, and tetrabenzoheptaoxadiamide 15-22 have been prepared. These compounds were obtained in the macrocyclization step by reacting the diamines 6 and 7 with appropriate dicarboxylic acid dichlorides 8-14. The cyclization does not require high dilution techniques or template effect and provides the expected dilactams in high yields ranging from 63% to 81%.
https://ijcce.ac.ir/article_10199_3f0816a9e5003cff873ee9a0e8775719.pdf
Macrocyclic diamides
Synthesis
Direct macrocyclization
Dicarboxylic acid dichloride
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
13
15
10.30492/ijcce.2000.10200
10200
FT-Raman Spectra of Saffron (Crocus Stivus L.); A Possible Method for Standardization of Saffron
Amanollah Aminzadeh
arastou@cc.iut.ac.ir
1
College of Chemistry, Isfahan University of Technology, Isfahan, I.R. IRAN
FT-Raman Spectra of Saffron (crocus sativus L.) with a partial assignment is reported. Based on the Raman data, it is concluded that main pigments in saffron are crocins and crocetin. It is proposed that the quickly attainable FT-Raman spectrum of solid saffron, may be used as a means of saffron standardization.
https://ijcce.ac.ir/article_10200_e4f7034e3912dc87772079b88b650dd3.pdf
Saffron
FT-Raman spectra
Crocetin
Crocin
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
16
18
10.30492/ijcce.2000.10201
10201
Cycloaddition of Diphenylnitrilimine to 1,5-Benzodiazepines
Rachid Zinber
1
Redouane Achour
2
Ahmed Jalal El Hajji
3
Asmaa Hakan
4
Mohammed Zoubair Cherkaui
5
Laboratory of Hetrocyclic Organic Chemistry, Faculty of Sciences, Rabat, Morroco
Laboratory of Hetrocyclic Organic Chemistry, Faculty of Sciences, Rabat, Morroco
Laboratory of Hetrocyclic Organic Chemistry, Faculty of Sciences, Rabat, Morroco
Laboratory of Hetrocyclic Organic Chemistry, Faculty of Sciences, Rabat, Morroco
Laboratory of Hetrocyclic Organic Chemistry, Faculty of Sciences, Rabat, Morroco
The cycloaddition reaction of diphenylnitrilimine on the 1,5-benzodiazepines has been studied. New molecules of triazolobenzodiazepines type have been isolated and characterized.
https://ijcce.ac.ir/article_10201_e343c780be1c12095313940f5dc74810.pdf
Benzodiazepine
Diphenylnitrilimine
Heterocycle
Cycloaddition
Phase transfer catalyse
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
19
23
10.30492/ijcce.2000.10202
10202
Preparation and Characterization of Ni(II), Co (II) and Cr(III) Complexes with Benzoylamethylenetriphenylphosphine
Ahmad Emad
1
Kazem Karami
2
Department of Chemistry, Teacher Training University, Zip code 15614, Tehran, I.R. IRAN
Department of Chemistry, Teacher Training University, Zip code 15614, Tehran, I.R. IRAN
The reaction between Ni(II), Co(II), cr(III) bitrates, Ni(II) chloride and ambidentate a-keto ylide benzoylmethylenetriphenylphosphine (BPPY) resulted in isolation of [Ni(BPPY)2](NO3)2.2H2O, [Ni(BPPY)2]Cl2, [Co(BPPY)2](NO3)2 and [Cr(BPPY)3](NO3)3; 2H2O. The compounds were characterized by elemental analyses and infrared 1HNMR spectroscopy, molar conductivity in solution and molecular weight measurements.
https://ijcce.ac.ir/article_10202_3b460f20ac27e5e5157fe43b3151cee4.pdf
complex
Benzoylmethylenetriphenylphosphine
Ni(II)
Co(II)
Cr(III)
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
24
28
10.30492/ijcce.2000.10203
10203
An Efficient One Pot Procedure for Preparation of Symmetrical N,N'-Disubstituted Urea from Aromatic and Aliphatic Amines and Urea under Microwave Irradiation
Mohammad S. Khajavi
1
Mohammad Gl Dakamin
2
Hassan Hazarkhani
3
Mostafa Hajihadi
4
Farzad Nikpour
5
Department of Chemistry, Faculty of Science, Shahid Beheshti University, Department of Chemistry, Faculty of Science, Shahid Beheshti University, Tehran, I.R. IRAN, I.R. IRAN
Department of Chemistry, Faculty of Science, Shahid Beheshti University, Tehran, I.R. IRAN
Department of Chemistry, Faculty of Science, Shahid Beheshti University, Tehran, I.R. IRAN
Department of Chemistry, Faculty of Science, Shahid Beheshti University, Tehran, I.R. IRAN
Department of Chemistry, Faculty of Science, Shahid Beheshti University, Tehran, I.R. IRAN
A phosgene-free synthesis of symmetrical N,N'-disubstituted urea by the reaction of aromatic and aliphatic primary amines and urea promoted by microwave irradiation in the presence of a suitable energy-transfer solvent such as N-N-dimethylacetamide is described.
https://ijcce.ac.ir/article_10203_4cdbfce8016c17706968d99a59c7dfc5.pdf
Microwave irradiation
Amines
N'-Disubstituted urea
N-Dimethylacetamide
Solvent free reaction
urea
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
29
31
10.30492/ijcce.2000.10209
10209
Rates of Acid-Catalyzed NH Proton Exchange of Enaminones, an 1H NMR Study
Ahmad Shaabani
a-shaabani@sbu.ac.ir
1
Faiezeh Sadeghi Nejadt
2
Issa Yavari
yavarisa@modares.ac.ir
3
Department of Chemistry, Shahid Beheshti University, Tehran, I.R. IRAN
Department of Chemistry, Shahid Beheshti University, Tehran, I.R. IRAN
Department of Chemistry, Tarbiat Modarres University, P.O. Box 14155-4838, Tehran, I.R. IRAN
: 1H NMR spectra of a series of enaminones R-CO-CH=C(NHCH2Ph)-R [1, R=CH3; 2, R=C6H5; 3, R=CF3; 4, R=CH2CH2CH2; 5, R=CH2C(CH3)2CH2], were obtained in the presence of trifluoroacetic acid in CDCl3 or DMSO-d6 at 28 °C. Steric, solvent, electronic and hydrogen bonding effects on the rates of acid-catalyzed NH proton exchanges were investigated. Rate constants were calculated by 1H NMR line shape analysis.
https://ijcce.ac.ir/article_10209_6ace2d6a9383621b08ba2deeacc5ee4c.pdf
Proton exchange reaction
Acid-catalyzed proton exchange
Dynamic NMR spectroscopy
Rate constants
Enaminones
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
32
36
10.30492/ijcce.2000.10207
10207
A Novel and Efficient Synthesis of New Dixanthones
Hashem Sharghi
1
Fatemeh Tamaddon
2
Hossein Eshghi
heshghi@ferdowsi.um.ac.ir
3
Department of Chemistry, Shiraz University, Zip code 71454, Shiraz, I.R. IRAN
Department of Chemistry, Shiraz University, Zip code 71454, Shiraz, I.R. IRAN
Department of Chemistry, Shiraz University, Zip code 71454, Shiraz, I.R. IRAN
The facile and high yield synthesis of a new series of dibenzophenones in the presence of polyphosphoric acid (PPA) together with their cyclization to corresponding moni and dixanthones are described. The aromatic nucleophilic substitution of these new compounds are also studied.
https://ijcce.ac.ir/article_10207_adf7b9dc1976a021b9dab429678e4b99.pdf
Dixanthones
Synthesis
Dibenzophenones
Aromatic nucleophilic substitution
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
37
39
10.30492/ijcce.2000.10208
10208
Sulphuric Acid Adsorbed on Silica Gel. A Remarkable Acetylation Catalyst
Mohammad, A. Bigdeli
1
Nikdokht Nahid
2
Majid M. Heravi
3
Department of Chemistry, Teacher Training University, Tehran, I.R. IRAN
Department of Chemistry, Teacher Training University, Tehran, I.R. IRAN
Department of Chemistry, School of Sciences, Azzahra University, Tehran, I.R. IRAN
Sulphuric acid adsorbed on silica gel is a practical and useful catalyst for acetylation of varius alcohols, Phenols and amines.
https://ijcce.ac.ir/article_10208_3c0dfb5ffe563db3073ae72a798273d3.pdf
Sulphuric Acid
Silica gel
Acetylation alcohols
Amines
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2000-06-01
19
1
40
42
10.30492/ijcce.2000.10196
10196
The Role of Boron in Thermal Decomposition of Ammonium Perchlorate
Abdolsamad Zarrin Ghalam Moghaddam
1
Ali Akbar Hashemi Pour Rafsanjani
2
Department of Chemical Engineering, Tarbiat Modares University, Zip Code 14117, Tehran, I.R. IRAN
Department of Chemical Engineering, Tarbiat Modares University, Zip Code 14117, Tehran, I.R. IRAN
Simultaneous thermal analysis (STA) method has been applied to study decomposition reactions of AP under a flowing nitrogen atmosphere and static air. Results obtained indicate that a phase transformation occurs prior to the decomposition reaction. Decomposition takes place exothermally in two stages, first stage of decomposition could be suppressed by the controlled heating programme. Addition of a small amount of born lowered the temperature of the exotherm and increased the overall enthalpy of reactions.
https://ijcce.ac.ir/article_10196_591c7d35030e481b358b977003918eac.pdf
Ammonium perchlorate
Thermal decomposition
Catalytic effects
solid propellant
Thermal Analysis