Ahmad Reza Massah | Islamic Azad University, Shahreza Branch (original) (raw)
Papers by Ahmad Reza Massah
RSC Advances, 2013
A manganese Schiff base complex containing salicylaldehyde–poly(vinylamine)/SBA-15 (Mn–SA–PVAm/SB... more A manganese Schiff base complex containing salicylaldehyde–poly(vinylamine)/SBA-15 (Mn–SA–PVAm/SBA-15) composite was prepared as a novel heterogeneous catalyst through in situ polymerization of vinylamine within the nano-channels of mesoporous silica SBA-15 without using any organo silica precursors. The catalyst was characterized well by elemental analysis, FT-IR, AAS, DRS UV-Vis, XRD, BET, SEM and TGA techniques. The catalytic activity of the supported metal complex was studied in the selective oxidation of benzyl alcohols using t-butyl hydroperoxide as an oxidant. The effects of reaction temperature, solvent and the amount of catalyst as well as the recyclability of the catalyst were investigated.
DOAJ (DOAJ: Directory of Open Access Journals), 2011
A new efficient and practical method for the room-temperature reduction of aromatic nitro compoun... more A new efficient and practical method for the room-temperature reduction of aromatic nitro compounds employing FeSO 4. 7H 2 O, NaBH 4 , H 3 PW 12 O 40 system in H 2 O under mild conditions is reported. The method is simple, inexpensive, easily scaled-up and applicable for the large scale preparation of different substituted anilines.
Journal of Physics and Chemistry of Solids, Apr 1, 2008
Free-radical cross-linking copolymerization of methyl methacrylate (MMA), ethylene glycol dimetha... more Free-radical cross-linking copolymerization of methyl methacrylate (MMA), ethylene glycol dimethacrylate (EGDM), and trimethoxyvinylsilane (TMVS) has been investigated in toluene at a total monomer concentration of 4molL−1 and at 70°C. Conversion of monomer, volume swelling ratio, weight fraction, and gel point were measured as a function of the reaction time, TMVS concentration, toluene content, temperature, and chain transfer agents up to
Applied Clay Science, 2012
Different nanocomposites silica-resin based were prepared and characterized in order to achieve a... more Different nanocomposites silica-resin based were prepared and characterized in order to achieve a porous monolith that contains bentonite and allows the flow of aqueous systems. The bentonite used to prepare the nanocomposites was a good adsorbent for various molecules in aqueous media in stirred tank reactor. But the challenge was the obtention of porous bentonite composite columns for industrial applications. The primary composite, silica-resin, was prepared by the sol-gel precursor mixture of the tetraethylorthosilicate (TEOS) and a phenolic resin, made up the gel which is then dried and cured at 180 °C. Bentonite was added to the precursor mixture obtaining the, silica-resin-bentonite composite, and also other potencial adsorbent, carbon, was added obtaining the silica-resin-bentonite-carbon composite. The different composites were mineralogical and structurally evaluated by X-ray diffraction, Infrared spectroscopy with Fourier transform, Differential thermal analyses and thermogravimetric analyses. The textural characterization was performed by Adsorption of nitrogen (Sg-BET), Mercury intrusion porosimetry and Scanning electron microscopy. The comparison of the characteristics and properties between the composites evidenced that the addition of bentonite modify the solgel process and interferes in the composite cured process, so that, modify the mesoporosity and macroporosity of the composite. But, there is a maximum clay limit to obtain an homogeneous monolith. The addition of carbon decreases the porosity of the composite to a greater extent when the granulometry is greater.
Social Science Research Network, 2020
A simple, cost efective and green method was presented for the synthesis of coumarin bis sulfonam... more A simple, cost efective and green method was presented for the synthesis of coumarin bis sulfonamides. 17 novel coumarin sulfonamides were synthesized in good to high yield and purity in six steps starting from 2-amino thiazole, aniline and 4-methoxy aniline. All of the reactions have been done under green conditions without using any hazardous solvent.Also, the anti-bacterial properties of the synthesized sulfonamides were investigated using two strains of Staphylococcus (gram-positive) and Escherichia coli (gram-negative) bacteria.
ChemInform, Dec 9, 2010
An Efficient and Green Approach for the Esterification of Aromatic Acids with Various Alcohols ov... more An Efficient and Green Approach for the Esterification of Aromatic Acids with Various Alcohols over H 3 PO 4 /TiO 2-ZrO 2 .-H 3 PO 4 /TiO 2-ZrO 2 is shown to be efficient for the esterification of aromatic acids under solvent-free conditions. The catalyst can easily be recycled and reused without significant loss of activity.-(KALBASI*, R.
Journal of chemical research, Aug 1, 2015
Twenty novel 4-(N-substituted-sulfonamide) derivatives of xanthone have been prepared from the 4-... more Twenty novel 4-(N-substituted-sulfonamide) derivatives of xanthone have been prepared from the 4-sulfonyl chloride of 1-hydroxy-3-methoxyxanthone and a variety of alkylamines and arylamines under mild conditions and their in vitro anti-bacterial activities against Staphylococcus aureus and Escherichia coli have been determined
New Journal of Chemistry, 2018
A new hydrogen peroxide (H 2 O 2) sensor is fabricated based on a multiwalled carbon nanotube-mod... more A new hydrogen peroxide (H 2 O 2) sensor is fabricated based on a multiwalled carbon nanotube-modified glassy carbon electrode (MWCNT-GCE) and reactive blue 19 (RB). The charge transfer coefficient, a, and the charge transfer rate constant, k s , of RB adsorbed on MWCNT-GCE were calculated and found to be 0.44 ± 0.01 Hz and 1.9 ± 0.05 Hz, respectively. The catalysis of the electroreduction of H 2 O 2 by RB-MWCNT-GCE is described. The RB-MWCNT-GCE shows a dramatic increase in the peak current and a decrease in the overvoltage of H 2 O 2 electroreduction in comparison with that seen at an RB modified GCE, MWCNT modified GCE, and activated GCE. The kinetic parameters such as a and the heterogeneous rate constant, k', for the reduction of H 2 O 2 at RB-MWCNT-GCE surface were determined using cyclic voltammetry. The detection limit of 0.27mM and three linear calibration ranges were obtained for H 2 O 2 determination at the RB-MWCNT-GCE surface using an amperometry method. In addition, using the newly developed sensor, H 2 O 2 was determined in real samples with satisfactory results.
E-journal of Chemistry, 2012
A wide variety of alcohols, phenols, amines and thiols were efficiently acylated with carboxylic ... more A wide variety of alcohols, phenols, amines and thiols were efficiently acylated with carboxylic acid anhydrides and chlorides in the presence of Hydrotalcite under solvent-free conditions at room temperature in good to high yields. Eco-friendly conditions and reusability of the catalyst are the most important advantages of this protocol.
ChemInform, Apr 20, 2010
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Current Medicinal Chemistry, Feb 1, 2023
: Sulfonamide compounds, also known as sulfa drugs, are a significant class of synthetic bacterio... more : Sulfonamide compounds, also known as sulfa drugs, are a significant class of synthetic bacteriostatic antimicrobials and were the primary source of therapy against bacterial infections before the introduction of penicillin in 1941. Hybridization of sulfonamides with various pharmaceutically active heterocyclic moieties leads to sulfonamide hybrids with a wide variety of biological activities. Part B of this review presents the most recent advances in designing and developing more two-component sulfonamide hybrids containing triazole, thiadiazole, triazine, oxazole/ benzoxazole, isoxazole, oxadiazole, imidazole, benzimidazole, furan, benzofuran, thiophene, pyrrole, indazole, tetrazole, chromene/ chromone, pyridazine, quinoxaline, acridine, phthalazine, and xanthone between 2015 and 2020. We hope this review helps the scientific community in designing more useful sulfonamide hybrid drugs.
Zeitschrift für Naturforschung B, Mar 1, 2006
A simple method for the oxidative aromatization of Hantzsch 1,4-dihydropyridines to the correspon... more A simple method for the oxidative aromatization of Hantzsch 1,4-dihydropyridines to the corresponding pyridines is reported using urea-hydrogen peroxide/maleic anhydride in acetonitrile.
Synthetic Communications, Aug 9, 2010
ChemInform, Dec 30, 2010
ChemInform Abstract The title complex (III) is prepared by 1:2 molar reaction of the tributylphos... more ChemInform Abstract The title complex (III) is prepared by 1:2 molar reaction of the tributylphosphine analogue (I) with the diphosphine (II). Its characterization occurs by IR and VIS spectroscopy, and by an X-ray structure analysis (space group C2/c, Z=4).
ChemInform, Jun 13, 2010
A Facile and Convenient Method for the Preparation of Macrocyclic Diamides.-A number of macrocycl... more A Facile and Convenient Method for the Preparation of Macrocyclic Diamides.-A number of macrocyclic diamides [cf. (III), (VI), (IX)] are synthesized by neat reaction of a dicarboxylic dichloride with primary diamino compounds in the presence of MgO-silica gel. The inorganic solid can be simply regenerated and reused in several cycles without decrease in activity.
Current Medicinal Chemistry, Feb 1, 2023
: Sulfonamides constitute an important class of drugs, with many types of pharmacological agents ... more : Sulfonamides constitute an important class of drugs, with many types of pharmacological agents possessing antibacterial, anti-carbonic anhydrase, anti-obesity, diuretic, hypoglycemic, antithyroid, antitumor, and anti-neuropathic pain activities. The sulfonamides have the general formula R-SO2NHR', in which the functional group is bound to an aromatic, heterocycle, aliphatic, and so on. The nature of the R and R' moiety is variable, starting with hydrogen and ranging to a variety of moieties incorporating organic compounds such as coumarin, isoxazole, tetrazole, pyrazole, pyrrole, and so many other pharmaceutical active scaffolds that lead to a considerable range of hybrids named as sulfonamide hybrids. Part A of this review presents the most recent advances in designing and developing two-component sulfonamide hybrids containing coumarin, indole, quinoline, isoquinoline, chalcone, pyrazole/pyrazoline, quinazoline, pyrimidine, thiazole, benzothiazole, and pyridine between 2015 and 2020. Specifically, the authors review the scientific reports on the synthesis and biological activity of this kind of hybrid agent.
ChemInform, Jul 3, 2012
ZSM-5-SO 3 H as a Novel, Efficient, and Reusable Catalyst for the Chemoselective Synthesis and De... more ZSM-5-SO 3 H as a Novel, Efficient, and Reusable Catalyst for the Chemoselective Synthesis and Deprotection of 1,1-Diacetates under Eco-Friendly Conditions.-The acylation of aliphatic (I) and aromatic aldehydes (IV) with acetic anhydride proceeds smoothly in the presence of the zeolite ZSM-5-supported sulfuric acid under solvent-free, heterogeneous conditions at room temperature. Deprotection of the acetals (III) and (V) also occurs efficiently by using the same catalyst. The procedure is simple, environmentally benign, and only a stoichiometric amount of the acylating agent is required.-(MASSAH*,
Aza-Micheal addition of aromatic and aliphatic amines and sulfonamides to α,β-unsaturated esters,... more Aza-Micheal addition of aromatic and aliphatic amines and sulfonamides to α,β-unsaturated esters, ketones and nitriles has been developed using the zeolite ZSM-5-SO 3 H as catalyst under solvent-free conditions.
RSC Advances, 2013
A manganese Schiff base complex containing salicylaldehyde–poly(vinylamine)/SBA-15 (Mn–SA–PVAm/SB... more A manganese Schiff base complex containing salicylaldehyde–poly(vinylamine)/SBA-15 (Mn–SA–PVAm/SBA-15) composite was prepared as a novel heterogeneous catalyst through in situ polymerization of vinylamine within the nano-channels of mesoporous silica SBA-15 without using any organo silica precursors. The catalyst was characterized well by elemental analysis, FT-IR, AAS, DRS UV-Vis, XRD, BET, SEM and TGA techniques. The catalytic activity of the supported metal complex was studied in the selective oxidation of benzyl alcohols using t-butyl hydroperoxide as an oxidant. The effects of reaction temperature, solvent and the amount of catalyst as well as the recyclability of the catalyst were investigated.
DOAJ (DOAJ: Directory of Open Access Journals), 2011
A new efficient and practical method for the room-temperature reduction of aromatic nitro compoun... more A new efficient and practical method for the room-temperature reduction of aromatic nitro compounds employing FeSO 4. 7H 2 O, NaBH 4 , H 3 PW 12 O 40 system in H 2 O under mild conditions is reported. The method is simple, inexpensive, easily scaled-up and applicable for the large scale preparation of different substituted anilines.
Journal of Physics and Chemistry of Solids, Apr 1, 2008
Free-radical cross-linking copolymerization of methyl methacrylate (MMA), ethylene glycol dimetha... more Free-radical cross-linking copolymerization of methyl methacrylate (MMA), ethylene glycol dimethacrylate (EGDM), and trimethoxyvinylsilane (TMVS) has been investigated in toluene at a total monomer concentration of 4molL−1 and at 70°C. Conversion of monomer, volume swelling ratio, weight fraction, and gel point were measured as a function of the reaction time, TMVS concentration, toluene content, temperature, and chain transfer agents up to
Applied Clay Science, 2012
Different nanocomposites silica-resin based were prepared and characterized in order to achieve a... more Different nanocomposites silica-resin based were prepared and characterized in order to achieve a porous monolith that contains bentonite and allows the flow of aqueous systems. The bentonite used to prepare the nanocomposites was a good adsorbent for various molecules in aqueous media in stirred tank reactor. But the challenge was the obtention of porous bentonite composite columns for industrial applications. The primary composite, silica-resin, was prepared by the sol-gel precursor mixture of the tetraethylorthosilicate (TEOS) and a phenolic resin, made up the gel which is then dried and cured at 180 °C. Bentonite was added to the precursor mixture obtaining the, silica-resin-bentonite composite, and also other potencial adsorbent, carbon, was added obtaining the silica-resin-bentonite-carbon composite. The different composites were mineralogical and structurally evaluated by X-ray diffraction, Infrared spectroscopy with Fourier transform, Differential thermal analyses and thermogravimetric analyses. The textural characterization was performed by Adsorption of nitrogen (Sg-BET), Mercury intrusion porosimetry and Scanning electron microscopy. The comparison of the characteristics and properties between the composites evidenced that the addition of bentonite modify the solgel process and interferes in the composite cured process, so that, modify the mesoporosity and macroporosity of the composite. But, there is a maximum clay limit to obtain an homogeneous monolith. The addition of carbon decreases the porosity of the composite to a greater extent when the granulometry is greater.
Social Science Research Network, 2020
A simple, cost efective and green method was presented for the synthesis of coumarin bis sulfonam... more A simple, cost efective and green method was presented for the synthesis of coumarin bis sulfonamides. 17 novel coumarin sulfonamides were synthesized in good to high yield and purity in six steps starting from 2-amino thiazole, aniline and 4-methoxy aniline. All of the reactions have been done under green conditions without using any hazardous solvent.Also, the anti-bacterial properties of the synthesized sulfonamides were investigated using two strains of Staphylococcus (gram-positive) and Escherichia coli (gram-negative) bacteria.
ChemInform, Dec 9, 2010
An Efficient and Green Approach for the Esterification of Aromatic Acids with Various Alcohols ov... more An Efficient and Green Approach for the Esterification of Aromatic Acids with Various Alcohols over H 3 PO 4 /TiO 2-ZrO 2 .-H 3 PO 4 /TiO 2-ZrO 2 is shown to be efficient for the esterification of aromatic acids under solvent-free conditions. The catalyst can easily be recycled and reused without significant loss of activity.-(KALBASI*, R.
Journal of chemical research, Aug 1, 2015
Twenty novel 4-(N-substituted-sulfonamide) derivatives of xanthone have been prepared from the 4-... more Twenty novel 4-(N-substituted-sulfonamide) derivatives of xanthone have been prepared from the 4-sulfonyl chloride of 1-hydroxy-3-methoxyxanthone and a variety of alkylamines and arylamines under mild conditions and their in vitro anti-bacterial activities against Staphylococcus aureus and Escherichia coli have been determined
New Journal of Chemistry, 2018
A new hydrogen peroxide (H 2 O 2) sensor is fabricated based on a multiwalled carbon nanotube-mod... more A new hydrogen peroxide (H 2 O 2) sensor is fabricated based on a multiwalled carbon nanotube-modified glassy carbon electrode (MWCNT-GCE) and reactive blue 19 (RB). The charge transfer coefficient, a, and the charge transfer rate constant, k s , of RB adsorbed on MWCNT-GCE were calculated and found to be 0.44 ± 0.01 Hz and 1.9 ± 0.05 Hz, respectively. The catalysis of the electroreduction of H 2 O 2 by RB-MWCNT-GCE is described. The RB-MWCNT-GCE shows a dramatic increase in the peak current and a decrease in the overvoltage of H 2 O 2 electroreduction in comparison with that seen at an RB modified GCE, MWCNT modified GCE, and activated GCE. The kinetic parameters such as a and the heterogeneous rate constant, k', for the reduction of H 2 O 2 at RB-MWCNT-GCE surface were determined using cyclic voltammetry. The detection limit of 0.27mM and three linear calibration ranges were obtained for H 2 O 2 determination at the RB-MWCNT-GCE surface using an amperometry method. In addition, using the newly developed sensor, H 2 O 2 was determined in real samples with satisfactory results.
E-journal of Chemistry, 2012
A wide variety of alcohols, phenols, amines and thiols were efficiently acylated with carboxylic ... more A wide variety of alcohols, phenols, amines and thiols were efficiently acylated with carboxylic acid anhydrides and chlorides in the presence of Hydrotalcite under solvent-free conditions at room temperature in good to high yields. Eco-friendly conditions and reusability of the catalyst are the most important advantages of this protocol.
ChemInform, Apr 20, 2010
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Current Medicinal Chemistry, Feb 1, 2023
: Sulfonamide compounds, also known as sulfa drugs, are a significant class of synthetic bacterio... more : Sulfonamide compounds, also known as sulfa drugs, are a significant class of synthetic bacteriostatic antimicrobials and were the primary source of therapy against bacterial infections before the introduction of penicillin in 1941. Hybridization of sulfonamides with various pharmaceutically active heterocyclic moieties leads to sulfonamide hybrids with a wide variety of biological activities. Part B of this review presents the most recent advances in designing and developing more two-component sulfonamide hybrids containing triazole, thiadiazole, triazine, oxazole/ benzoxazole, isoxazole, oxadiazole, imidazole, benzimidazole, furan, benzofuran, thiophene, pyrrole, indazole, tetrazole, chromene/ chromone, pyridazine, quinoxaline, acridine, phthalazine, and xanthone between 2015 and 2020. We hope this review helps the scientific community in designing more useful sulfonamide hybrid drugs.
Zeitschrift für Naturforschung B, Mar 1, 2006
A simple method for the oxidative aromatization of Hantzsch 1,4-dihydropyridines to the correspon... more A simple method for the oxidative aromatization of Hantzsch 1,4-dihydropyridines to the corresponding pyridines is reported using urea-hydrogen peroxide/maleic anhydride in acetonitrile.
Synthetic Communications, Aug 9, 2010
ChemInform, Dec 30, 2010
ChemInform Abstract The title complex (III) is prepared by 1:2 molar reaction of the tributylphos... more ChemInform Abstract The title complex (III) is prepared by 1:2 molar reaction of the tributylphosphine analogue (I) with the diphosphine (II). Its characterization occurs by IR and VIS spectroscopy, and by an X-ray structure analysis (space group C2/c, Z=4).
ChemInform, Jun 13, 2010
A Facile and Convenient Method for the Preparation of Macrocyclic Diamides.-A number of macrocycl... more A Facile and Convenient Method for the Preparation of Macrocyclic Diamides.-A number of macrocyclic diamides [cf. (III), (VI), (IX)] are synthesized by neat reaction of a dicarboxylic dichloride with primary diamino compounds in the presence of MgO-silica gel. The inorganic solid can be simply regenerated and reused in several cycles without decrease in activity.
Current Medicinal Chemistry, Feb 1, 2023
: Sulfonamides constitute an important class of drugs, with many types of pharmacological agents ... more : Sulfonamides constitute an important class of drugs, with many types of pharmacological agents possessing antibacterial, anti-carbonic anhydrase, anti-obesity, diuretic, hypoglycemic, antithyroid, antitumor, and anti-neuropathic pain activities. The sulfonamides have the general formula R-SO2NHR', in which the functional group is bound to an aromatic, heterocycle, aliphatic, and so on. The nature of the R and R' moiety is variable, starting with hydrogen and ranging to a variety of moieties incorporating organic compounds such as coumarin, isoxazole, tetrazole, pyrazole, pyrrole, and so many other pharmaceutical active scaffolds that lead to a considerable range of hybrids named as sulfonamide hybrids. Part A of this review presents the most recent advances in designing and developing two-component sulfonamide hybrids containing coumarin, indole, quinoline, isoquinoline, chalcone, pyrazole/pyrazoline, quinazoline, pyrimidine, thiazole, benzothiazole, and pyridine between 2015 and 2020. Specifically, the authors review the scientific reports on the synthesis and biological activity of this kind of hybrid agent.
ChemInform, Jul 3, 2012
ZSM-5-SO 3 H as a Novel, Efficient, and Reusable Catalyst for the Chemoselective Synthesis and De... more ZSM-5-SO 3 H as a Novel, Efficient, and Reusable Catalyst for the Chemoselective Synthesis and Deprotection of 1,1-Diacetates under Eco-Friendly Conditions.-The acylation of aliphatic (I) and aromatic aldehydes (IV) with acetic anhydride proceeds smoothly in the presence of the zeolite ZSM-5-supported sulfuric acid under solvent-free, heterogeneous conditions at room temperature. Deprotection of the acetals (III) and (V) also occurs efficiently by using the same catalyst. The procedure is simple, environmentally benign, and only a stoichiometric amount of the acylating agent is required.-(MASSAH*,
Aza-Micheal addition of aromatic and aliphatic amines and sulfonamides to α,β-unsaturated esters,... more Aza-Micheal addition of aromatic and aliphatic amines and sulfonamides to α,β-unsaturated esters, ketones and nitriles has been developed using the zeolite ZSM-5-SO 3 H as catalyst under solvent-free conditions.