Sami Publishing Company
Asian Journal of Green Chemistry
2588-5839
2588-4328
2
4
2018
10
01
Silver functionalized on hydroxyapatite-core-shell magnetic γ-Fe2O3: An enviromentaly and readily recyclable nanatalyst for the one-pot synthesis of 14H-dibenzo[a,j]xanthenes derivatives
281
298
EN
Zeinab
Arzehgar
0000-0003-3774-4348
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
arzehgar@yahoo.com
Abdelkarim
Aydi
Department of Chemical and Materials Engineering, College of Engineering, National College of Chemical Industry, Nancy, Polytechnic Institute of Lorraine, France Frankfurt Am Main Area, Germany
aydiabdelkarim@gmail.com
Mohammad
Mirzaei Heydari
0000-0001-8701-578X
School of Environment, Natural Resources & Geography, Bangor University, Bangor, Gwynedd, Wales, United Kingdom
mirzaeiheydari@yahoo.com
10.22034/ajgc.2018.61867
An efficient and simple procedure for the preparation of silver functionalized on hydroxyapatite-core-shell magnetic γ-Fe<sub>2</sub>O<sub>3</sub> nanoparticles (γ-Fe<sub>2</sub>O<sub>3</sub>@HAp-Ag)as an enviromentaly efficient magnetically recoverable and reusable catalyst is described, and it is used for the one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes <em>via</em> a cost-effective and atom-economical procedure from substituted benzaldehydes and β-naphthol under solvent-free conditions at 60 °C. The attractiveness of this protocol lies in its green approach in that the catalyst is easily recoverable using an external magnet, which makes the process economical.
γ-Fe2O3@HAp-Ag Lewis acidic catalyst 14-aryl-14Hdibenzo[a,j]xanthenes Rusable of catalyst
https://www.ajgreenchem.com/article_61867.html
https://www.ajgreenchem.com/article_61867_7504193e0715c2df4ab2eafc2f3da155.pdf
Sami Publishing Company
Asian Journal of Green Chemistry
2588-5839
2588-4328
2
4
2018
10
01
Catalyst and solvent-free synthesis of β-enaminone derivatives
299
306
EN
Farahnaz Kargar
Behbahani
Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
farahnazkargar@yahoo.com
Sara
Kafi
Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
sarakafi@ymail.com
Hannaneh
Gholizadeh
Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
hannanehgholizadeh@yahoo.com
10.22034/ajgc.2018.62649
In this study, the green procedure for synthesis of the β-enaminones is described. The reaction of aromatic amines with β-dicarbonyl compounds under solvent and catalyst-free conditions at 120 °C affords the β-enaminone and β-enamino esters in high-to-excellent yields, in short reaction time, easy separation, work up and purification without need to column chromatography. Also, some new derivatives of β-enaminones were synthesized using this method. The prominent advantages of this new method is operational simplicity, good yields in short reaction times, easy work-up procedures, catalyst and solvent free condition.<br />
β-Enaminones,Solvent-free,Catalyst-free,Aryl amine,Dicarbonyl compounds
https://www.ajgreenchem.com/article_62649.html
https://www.ajgreenchem.com/article_62649_8b676a408340ca4df7afed43fd4a6e61.pdf
Sami Publishing Company
Asian Journal of Green Chemistry
2588-5839
2588-4328
2
4
2018
10
01
Gelatin grafted with drug
307
317
EN
Firyal Mohammed Ali
Alsalami
Al-Mustansiriyah University, College of Science, Department of Chemistry, Baghdad
drfiryal55@gmail.com
10.22034/ajgc.2018.62704
In this research a novel drug polymer was prepared. The gelatin as a natural polymer has been used in the pharmaceutical and biomedical for the controlled release through grafted copolymerization with un saturated acid anhydride such as methyl nadic anhydride (Methyl-5-norbornene-2,3-dicarboxylic anhydride), formatted gelatin-g-methyl nadic anhydride copolymer A<sub>1</sub>, then modified to its corresponding polymer A<sub>2</sub> by substituted amoxilline as useful derivative as biomaterial. The prepared drug biopolymer was characterization by FT-IR spectroscopy and controlled drug release was considered in different buffer solution at 37 °C as in vitro study and controlled drug release was compared at zero time and after many days, the methyl nadic anhydride which was used as a spacer between gelatin and amoxilline. It can provide functional groups which are pendant through backbone of polymer substituted with drug through amide groups lead to good sustain release rate for hydrolysis through amide attachment gradually for many days. This design of carries for controlled delivery of the therapeutic agent which could release the entrapped drug over an extended period and control the drug release was compared at zero time and after few days, indicated the rate of hydrolysis in basic medium is higher than acidic medium through hydrolysis of amide groups. It was observed that modified drug release with extended drug action via slow release, also this study gave a new drug polymer and in vivo performance was indicated that it will be talented for some bio active applications.<br /><br />
Gelatin Graft co Polymer Amoxilline Methyl-5-norbornene-2,3-dicarboxylic anhydride
https://www.ajgreenchem.com/article_62704.html
https://www.ajgreenchem.com/article_62704_e8400f4197d0c865bdc9a649596e1da2.pdf
Sami Publishing Company
Asian Journal of Green Chemistry
2588-5839
2588-4328
2
4
2018
10
01
One-pot, four component synthesis of pyrazolo[4′,3′:5,6]pyrido[2,3-d]pyrimidines derivatives
318
329
EN
Ramin
Javahershenas
0000-0001-5751-7203
Faculty of Chemistry, Urmia University, 5756151818, Urmia, Iran
jshbco@yahoo.com
Jabbar
Khalafy
Faculty of Chemistry, Urmia University, 5756151818, Urmia, Iran
jkhalafi@yahoo.com
10.22034/ajgc.2018.62714
A green approach to synthesis of the polyfunctionalized pyrazole [4′,3′:5,6]pyrido[2,3-<em>d</em>] pyrimidines derivatives was successfully achieved <em>via</em> one-pot, four component reactions of β-aminocrotonitrile, phenyhydrazine, arylglyoxals, barbituric acid derivatives in the presence of TEA (Triethylamine) as a catalyst in water under the reflux conditions. This protocol provided mild reaction conditions, short reaction times, high yields, low cost, easy isolation of products and possible biological, and pharmaceutical activities.
β-Aminocrotonitrile Arylglyoxal 1,3-Dimethylbarbituric acid Thiobarbituric acid TEA (triethylamine)
https://www.ajgreenchem.com/article_62714.html
https://www.ajgreenchem.com/article_62714_d3a41b77a962a33d9085f09b7faaebb6.pdf
Sami Publishing Company
Asian Journal of Green Chemistry
2588-5839
2588-4328
2
4
2018
10
01
One-pot route to nitriles from aldehyde and hydroxylamine hydrochloride on silica-gel
330
337
EN
Rakesh Ranjan
Chakraborty
Department of Chemistry, University of North Bengal, District Darjeeling, West Bengal, India
rakeshranjanchakraborty@gmail.com
Pranab
Ghosh
0000-0002-9388-3820
Department of Chemistry, University of North Bengal, District Darjeeling, West Bengal, India
pizy12@yahoo.com
10.22034/ajgc.2018.62809
A green and facile methodology for the synthesis of nitrile has been established from the corresponding aldehydes and hydroxylamine hydrochloride on silica-gel in hot condition. The protocol is equally effective for aliphatic as well as aromatic aldehydes, and has wide range of functional group tolerance. In addition, this methodology is solvent-free, inexpensive, environmental friendly and involves simple work-up process.
Nitriles,Aldehydes,Hydroxylaminehydrochloride,Silica-gel
https://www.ajgreenchem.com/article_62809.html
https://www.ajgreenchem.com/article_62809_5484c0cc5794fec5aa2dd2f22e9132ef.pdf
Sami Publishing Company
Asian Journal of Green Chemistry
2588-5839
2588-4328
2
4
2018
10
01
Synthesized nanoparticles of poly (Styrene–alternative-maleic anhydride) and prunus cerasus rock used for removing Cadmium (II) ions from aqueous solutions
338
363
EN
Naser
Samadi
Department of Analytical Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
samadi75@yahoo.com
Reza
Ansari
Department of Chemistry, Faculty of Science, University of Guilan,University Campus 2, Rasht, Iran
ransari271@guilan.ac.ir
Bakhtiar
Khodavirdilo
Department of Chemistry, Faculty of Science, University of Guilan,University Campus 2, Rasht, Iran
b_khodavirdilo@yahoo.com
10.22034/ajgc.2018.63330
Chelating adsorbents have been considered to be suitable materials for the recovery of cadmium in water treatments. Adsorption of Cadmium (II) ions on melamine-butanedioic acid, modified poly (Styrene-alternative-maleic anhydride) cross-linked by 1, 2-diaminobutane (CSMA-MB) and pit shell of sour cherry (Prunus cerasus rock) (PCR) as an ion exchange adsorbents have been investigated in aqueous solution. The adsorption behavior of these Cadmium (II) ions on the adsorbents was studied by varying the parameters such as pH (2-8), adsorbent dose (0-4.0 g/L<sup>-1</sup>), contact time (0‒240 min), and Cadmium (II) ion concentration (20-300 mg/L<sup>-1</sup>). Adsorption percentage was increased by increasing each of these parameters. The isotherm models such as Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich were used to describe adsorption equilibrium. The results showed that the best fit was achieved with the Langmuir isotherm equation, yielding maximum adsorption capacities of 81.30, 80.42 mg/g<sup>-1</sup> for Cd (II) with CSMA-MB and PCR respectively. Both adsorbents, CSMA-MB and PCR, are very suitable for the removal Cadmium (II) ions from aqueous solutions. The adsorbents were characterized by fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), x-ray diffraction analysis (XRD).
Chelating adsorbents,Langmuir isotherm,Prunus Cerasus Rock,Adsorption capacities
https://www.ajgreenchem.com/article_63330.html
https://www.ajgreenchem.com/article_63330_3075641c3551fd1a9238e3e776e02c2a.pdf
Sami Publishing Company
Asian Journal of Green Chemistry
2588-5839
2588-4328
2
4
2018
10
01
Extraction and purification of phycocyanin from spirulina platensis and evaluating its antioxidant and anti- inflammatory activity
364
379
EN
Mahdieh
Izadi
Department of Biochemistry, Payame Noor University, 19395- 4697, Tehran, Iran
izadi.mahdieh@yahoo.com
Mohammad
Fazilati
Department of Biochemistry, Payame Noor University, 81581-84431, Isfahan, Iran
fazilati.i.m@gmail.com
10.22034/ajgc.2018.63597
Phycocyanin is a blue pigment and water-soluble biliprotein from the spirulina platensis. It has great medical and medicinal properties and has been used as a nutritional supplements. Phycocyanin is also a natural and powerful antioxidant and anti-inflammatory. In this study, the phycocyanin of Spirulina platensis was extracted by using two enzymatic and ultrasonic methods and purified by ammonium sulfate precipitation and dialysis. The UV spectrophotometer absorption of the extracted sample showed a broad peak range at 280, 615, and 652 nm. By using The FT-IR results confirmed the structure and molecular bonds from extracted and purificated phycocyanin. The concentrations obtained at the enzymatically was 0.405 mg/mL and for sonication 0.422 mg/mL. By using the SDS PAGE method, bands of phycocyanin were identified and the molecular weight was determined between 19-14 KD. The antioxidant and anti-inflammatory activity of the phycocyanin was approved with the reaction by DPPH and HOCl.
Phycocyanin,Spirulina platensis,NADPH Oxidase
https://www.ajgreenchem.com/article_63597.html
https://www.ajgreenchem.com/article_63597_3db16ccfc57719527e7bfb36b1362631.pdf
Sami Publishing Company
Asian Journal of Green Chemistry
2588-5839
2588-4328
2
4
2018
10
01
Biosorption of Fe (III) onto coffee and tea powder: Equilibrium and kinetic study
380
394
EN
Khaled Muftah
Elsherif
Chemistry Department, Faculty of Science, University of Benghazi, Benghazi-Libya
elsherif27@yahoo.com
Ashraf
El-Hashani
Chemistry Department, Faculty of Science, University of Benghazi, Benghazi-Libya
aiiya600@yahoo.co.uk
Ibrahim
Haider
Libyan Academy-Graduate Institute, Misurata-Libya
ibrahim.haider110@gmail.com
10.22034/ajgc.2018.65163
The coffee and tea powders were investigated to be as a novel low-cost non-conventional biosorbent for the removal of Fe (III) from aqueous solutions. Biosorption isotherms and kinetics were also assessed. The studied operating parameters were initial Fe (III) concentration, contact time, pH, and biosorbent dose. The adsorption capacity was significantly increased from 9.18 mg/g to 54.14 mg/g when the initial metal ion concentration increased from 20 to 120 ppm. However, the adsorbed amount of Fe was improved from 2.29 to 23.31 mg/g when the biosorbent dose decreased from 1.0 to 0.1 g. Biosorption isothermal data could be well simulated by Langmuir, Freundlich, and then Temkin models denoted by high correlation coefficient values (R2 > 0.95). However, the Dubinin-Radushkevich isotherms model gives the least fit to experimental data. Langmuir adsorption capacities of coffee and tea were 85.5 and 285 mg/g, respectively. The kinetic data fitted very well to the pseudo-second-order kinetic model. As indicated by the biosorption capacity, coffee and tea powder are considered to be an efficient, low cost, and environmentally friendly biosorbent for the removal of Fe (III) ions from aqueous solutions.
Biosorption,Iron,Isotherms model,Kinetics
https://www.ajgreenchem.com/article_65163.html
https://www.ajgreenchem.com/article_65163_36e0d2ebb42c87f1f64c60584ada41cf.pdf