Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Synthesis and characterization of Schiff-base polymer derived from 2,5-dichloroaniline and 2-hydroxybenzaldehyde
237
241
EN
Milad
Kazemnejadi
Department of Chemistry, Faculty of Science, Golestan University, P.O. Box 155 Gorgan, Iran
mkazemnajadi@yahoo.com
Aliakbar
Dehno Khalaji
Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran
ad.khalaji@gu.ac.ir
Hossein
Mighani
Department of Chemistry, Faculty of Science, Golestan University, P.O. Box 155 Gorgan, Iran
h.mighani@yahoo.com
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
https://icc.journals.pnu.ac.ir/article_2883.html
https://icc.journals.pnu.ac.ir/article_2883_fcb93ed8ff2c0497061506ec08397325.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Simultaneous determination of Tropaeolin O and brilliant blue in food samples after cloud point extraction
242
251
EN
Rouhollah
Heydari
Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, P.O. BOX 68149-89468, Khorramabad, Iran
Farzaneh
Bastami
Department of Chemistry, Faculty of Sciences, Arak Branch, Islamic Azad University, Arak, Iran
Mohammad
Hosseini
Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran
smhosseini2007@gmail.com
Mohammad
Alimoradi
Department of Chemistry, Faculty of Sciences, Arak Branch, Islamic Azad University, Arak, Iran
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
https://icc.journals.pnu.ac.ir/article_2964.html
https://icc.journals.pnu.ac.ir/article_2964_caa9d51e5f08f312b512394a12308f1c.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Benign synthesis of N-aryl-3,10-dihydroacridin-1(2H)-one derivatives via ZnO nanoparticle-catalyzed Knoevenagel condensation/intramolecular enamination reaction
252
261
EN
Hamid
Saeidian
Department of Science, Payame Noor University (PNU), PO Box: 19395-4697, Tehran, Iran
saeidian1980@gmail.com
Farzaneh
Moradnia
Department of Chemistry, Payame Noor University, P. O. Box 19395-3697, Tehran, Iran.
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
https://icc.journals.pnu.ac.ir/article_2979.html
https://icc.journals.pnu.ac.ir/article_2979_5d30686fe2c6b18350da4210f223a489.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
A green synthesis of functionalized thiazol-2(3H)-imine via a three-component tandem reaction in ionic liquid media
262
267
EN
Ashraf Sadat
Shahvelayati
Department of Chemistry, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran
avelayati@yahoo.com
Leila
Hajiaghababaei
Department of Chemistry, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran
lhajiaghababaei@yahoo.com
Akram
Panahi Sarmad
Department of Chemistry, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran
a.panahisarmad64@gmail.com
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
https://icc.journals.pnu.ac.ir/article_2981.html
https://icc.journals.pnu.ac.ir/article_2981_ab7768d8ebaf0ca4776462727a454c8b.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
N-methyl pyridinium-p-toluene Sulfonate (NMPyTs) catalyzed synthesis of pyrano[2,3-c]pyrazoles
268
277
EN
DR. Vinod
T.
Kamble
Institute of Science, Dept. of Chemistry
Nagpur
vtkd@rediffmail.com
Dr. Giribala
Bondle
Dept. of Chemistry
Dr. BAMU, Abad.
gmbondle@gmail.com
Dr. Sandeep
T
Atkore
Dept. of Biochemistry, Dr. BAMU, Abad
satkore25@rediffmail.com
Abstarct:<br />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
https://icc.journals.pnu.ac.ir/article_3603.html
https://icc.journals.pnu.ac.ir/article_3603_7b862de36e34fcc84ef09318a0d8f309.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Separation identification and antioxidant evaluation of zingiber officinale essential oil
278
285
EN
Ali
Saberi
Department of Chemistry, Payame Noor University, PB BOX 19395-4697 Tehran, Iran
saberi121@gmail.com
Mehri
Alimohammadi
Department of Chemistry, Payame Noor University, PB BOX 19395-4697 Tehran, Iran
teh.pnu@gmail.com
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
https://icc.journals.pnu.ac.ir/article_2991.html
https://icc.journals.pnu.ac.ir/article_2991_98076eba167bbf287ed54a1633b2eed7.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Application of the extended solvation theory to study the interaction of β-CD with interpolymer of PEO and PAA
286
292
EN
Bahman
Vasheghani Farahani
IMMAM KHOMEINI INTERNATHIONAL UNIVERSITY
b.vasheghanif@gmail.com
Golamreza
Rezaei Behbahani
Imam Khomeini International University
grb402003@yahoo.com
Monir
Shalbafan
Imam Khomeini International University
m.shalbafan2012@yahoo.com
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. <br /> 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
https://icc.journals.pnu.ac.ir/article_3001.html
https://icc.journals.pnu.ac.ir/article_3001_9ebd31fb599dda5442b5b9c0a45bb17e.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
LaCl3.7H20: An efficient catalyst for one-pot multi-component synthesis of 1,4-polyhydroquinoline derivatives through unsymmetrical Hantzsch reaction
293
300
EN
Abhijeet
Somwanshi
Research Centre and Post Graduate Department of Chemistry, PadmashriVikhePatil College of Arts, Science and Commerce Pravaranagar At./Po. Lonikd. Tal.Rahata. Dist. Ahmednagar. 413713. (MS). India. (Affiliated to SavitribaiPhule Pune University, Pune)
somwanshiabhijeet179@gmail.com
Yashwant
Bhaskar
Pandit
Applied Chemistry Division, DIAT-DRDO, Girinagar, Pune. 411025.(MS) India.
yashwantbpandit21@gmail.com
Akash
Gholap
Research Centre and Post Graduate Department of Chemistry, PadmashriVikhe Patil College of Arts, Science and Commerce Pravaranagar At./Po. Lonikd. Tal.Rahata. Dist. Ahmednagar. 413713. (MS). India. (Affiliated to Savitribai Phule Pune University, Pune)
akashgholap1996@gmail.com
Rushikesh
Ghogare
Research Centre and Post Graduate Department of Chemistry, Padmashri Vikhe Patil College of Arts, Science and Commerce Pravaranagar At./Po. Lonikd. Tal.Rahata. Dist. Ahmednagar. 413713. (MS). India. (Affiliated to Savitribai Phule Pune University, Pune)
rushikeshghogare9@gmail.com
Shivaji
Pandit
Post Graduate and Research Centre, Department of Chemistry, Padmashri Vikhe Patil College of Arts, Science and Commerce Pravaranagar, (Loni kd) Tal. Rahata. Dist. Ahmednagar 413713 (MS) India.
akankshapandit2002@yahoo.com
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
https://icc.journals.pnu.ac.ir/article_3614.html
https://icc.journals.pnu.ac.ir/article_3614_0ef205c0bfd44c56572961199a15a4f5.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Theoretical study on the mechanism of stable phosphorus ylides derived from 5-aminoindazole in the presence of different dialkyl acetyelenedicarboxylates
301
307
EN
Mohammad
Zakarianezhad
Payam Noor University
m.zakarianejad@yahoo.com
Motahare
Shool
Payam Noor University
s.motahare@yahoo.com
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
https://icc.journals.pnu.ac.ir/article_3004.html
https://icc.journals.pnu.ac.ir/article_3004_46fcf32e21feb4752648f98e4be54cb3.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
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
308
314
EN
Abbas
Amini Manesh
Payame Noor University, Hamedan
a_aminima@yahoo.com
Ardeshir
Khazaei
Faculty of Chemistry, Bu-Ali Sina University, P.O. Box 651783868, Hamedan, Iran
khazaei_1326@yahoo.com
Maedeh
Gohari
Department of Chemistry, Payame Noor University, 19395-4697 Tehran, I. R. of Iran
ghohari_1375@yahoo.com
Mahdieh
Chegeni
Department of Chemistry, Faculty of Science, Ayatollah ozma Boroujerdi University, Boroujerd, Iran
ghegni_1988@gmail.com
Shahnaz
Saednia
Young Researchers & Elites Club, Toyserkan Branch, Islamic Azad University, Toyserkan, Iran
saednia_2016@yahoo.com
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
https://icc.journals.pnu.ac.ir/article_3024.html
https://icc.journals.pnu.ac.ir/article_3024_d86e1acd9727bc7dcd9ab5e6bff99b1c.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Water quality and sedimentary analyses of Siddheshwar dam (India) for assessing irrigational suitability
315
337
EN
Parveen
Rajjak Shaikh
SWAMI RAMANAND TEERTH MARATHWADA UNIVERSITY (SRTMU), NANDED, INDIA
shaikh_parveen100@yahoo.com
Isak
Rajjak Shaikh
SWAMI RAMANAND TEERTH MARATHWADA UNIVERSITY (SRTMU) NANDED - 431605. INDIA
isak@india.com
Arjun
Bapurao Bhosle
SWAMI RAMANAND TEERTH MARATHWADA UNIVERSITY (SRTMUN), NANDED, INDIA
abbkandlikar@gmail.com
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
https://icc.journals.pnu.ac.ir/article_3678.html
https://icc.journals.pnu.ac.ir/article_3678_14db5e07456f6f9c8d22e121e24f3b83.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
H3PW12O40 as an efficient catalyst for one-pot- tricomponent synthesis of chromeno[4,3-b]quinolones under microwave irradiation
338
344
EN
Radineh
Motamedi
aDepartment of Chemistry, School of Sciences, Payam Noor University, PB BOX 19395-4697 Tehran, Iran
mot.chemist@gmail.com
Sara
Sobhani
Department of Chemistry, University of Birjand , Birjand, Iran.
sobhanisara@yahoo.com
Farshid
Barani
Department of Chemistry, University of Birjand , Birjand, Iran.
f_barani@yahoo.com
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
https://icc.journals.pnu.ac.ir/article_2882.html
https://icc.journals.pnu.ac.ir/article_2882_3c05169724718613ed225d32fd1893ee.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Synthesis, biological and molecular modeling studies of macrocyclic complexes of trivalent metal ions
345
351
EN
Vikas
Sangwan
nit kurukshetra
vikassangwan616@gmail.com
Dharam Pal
Singh
nit,kurukshetra
dpsinghchem@gmail.com
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
https://icc.journals.pnu.ac.ir/article_3763.html
https://icc.journals.pnu.ac.ir/article_3763_bbc504965517373ad5fbdd4b2fe02879.pdf
Iranian chemical communication
2423-4958
2345-4806
5
Issue 3, pp. 237-363, Serial No. 16
2017
07
01
Reusable Silica supported Perchloric acid and potassium bisulphate as green catalysts for thiocyanation of aromatic compounds under solvent free conditions
352
363
EN
Chinna Rajanna
Kamatala
Department of Chemistry,
Osmania University,
Hyderabad (T.S)-500007
India
kcrajannaou@yahoo.com
Hemanth Sriram
Y.
Department of Chemistry
Osmania University
Hyederabad -(T.S) 500007
India
hemanthsriram87@gmail.com
Satish Kumar
Mukka
Department of Chemistry
Osmania University
Hyderabad-(T.S) India
satishchemlit@gmail.com
Venkateswarlu
Marri
Department of Chemistry
Osmania Univerity
Hyderabad-(T.S) India
drmarrichemlit@gmail.com
Touheeth
Fatima
Department of Chemistry
Osmania University
Hyderabad -(T.S) India
touheethchemlitt@gmail.com
Sai Sudhakar
Mukka
School of Chemistry
BITS, Pilani, Hyderabad
mukkasatish4028@gmail.com
Madhusudan Raju
R.
Department of Chemistry
Osmania University
Hyderabad-T.S
India
rmsrajuou@gmail.com
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
https://icc.journals.pnu.ac.ir/article_3773.html
https://icc.journals.pnu.ac.ir/article_3773_daeb0cb9c86f0b5a4ec796a057ce84aa.pdf