Ali Maleki - Academia.edu (original) (raw)
Papers by Ali Maleki
Tetrahedron Letters, Nov 18, 2009
Molecular Diversity, 2009
Bis-3-aminoimidazo[1, 2-a] pyridines, pyrimidines and pyrazines as extended pi-conjugated systems... more Bis-3-aminoimidazo[1, 2-a] pyridines, pyrimidines and pyrazines as extended pi-conjugated systems were synthesized for the first time by a novel pseudo five-component condensation of 2-aminopyridine pyrimidines and pyrazines derivatives with terephthalaldehyde or isoph-thalaldehyde and isocyanides in the presence of p-toluene-sulfonic acid in methanol.
Http Dx Doi Org 10 1080 00397911003629424, Feb 2, 2011
Abstract In this work, electrochemical oxidation of hydroquinones has been studied in the presenc... more Abstract In this work, electrochemical oxidation of hydroquinones has been studied in the presence of malononitrile as a nucleophile in aqueous solution using cyclic voltammetry and controlled potential coulometry. The results indicate that the quinones derived from hydro-quinones ...
J Org Chem, 2008
A novel one-pot pseudo-five-component synthesis of 4,5,6,7-tetrahydro-1 H-1,4-diazepine-5-carboxa... more A novel one-pot pseudo-five-component synthesis of 4,5,6,7-tetrahydro-1 H-1,4-diazepine-5-carboxamide derivatives starting from simple and readily available inputs including 2,3-diaminomaleonitrile, a cyclic or acyclic ketone, an isocyanide, and water in the presence of a catalytic amount of p-toluenesulfonic acid in aqueous medium at ambient temperature in high yields is described.
J Comb Chem, 2008
A new approach to the design of multicomponent reactions is introduced. As a result, the novel on... more A new approach to the design of multicomponent reactions is introduced. As a result, the novel one-pot synthesis of 2,3,4,5-tetrahydro-1 H-1,5-benzodiazepine-2-carboxamide derivatives using an aromatic diamine, a linear or cyclic ketone, an isocyanide, and water in the presence of a catalytic amount of p-toluenesulfonic acid at ambient temperature in high yields is described.
Mol Divers, 2010
In this study, a three-component one-pot synthesis of new 2,4-diamino-5H-chromeno[2,3-b]pyridine-... more In this study, a three-component one-pot synthesis of new 2,4-diamino-5H-chromeno[2,3-b]pyridine-3-carbonitriles derived from 2-amino-1,1,3-tricyanopropene, salicylic aldehydes and secondary cyclic amines is reported. The reaction is conducted in ethanol at ambient temperature in good-to-excellent yields.
Synthetic Communications, Oct 14, 2008
In this work, condensation reaction of 2-aminobenzamide with various alkyl, aryl, and alicyclic a... more In this work, condensation reaction of 2-aminobenzamide with various alkyl, aryl, and alicyclic aldehydes or ketones to 2,3-dihydroquinazolin-4(1H)-one derivatives in the presence of a catalytic amount of ammonium chloride in ethanol at room temperature is described. This reaction can be classified as a click chemical synthesis because of its high yields, short reaction times, and green and efficient reaction medium.
Journal of Nanostructure in Chemistry, Oct 31, 2014
Iranian Journal of Chemistry and Chemical Engineering, Dec 1, 2007
ABSTRACT: Silica sulfuric acid is found to catalyze efficiently the condensation of o-phenylenedi... more ABSTRACT: Silica sulfuric acid is found to catalyze efficiently the condensation of o-phenylenediamines with various linear and cyclic ketones to afford the corresponding 1,5-benzodiazepines in quantitative yields under solvent-free conditions at room temperature.
Chemical Pharmaceutical Bulletin, Feb 1, 2008
The direct conversion of alpha-hydroxy ketones and alpha-keto oximes into quinoxaline derivatives... more The direct conversion of alpha-hydroxy ketones and alpha-keto oximes into quinoxaline derivatives in the presence of a catalytic amount of ceric ammonium nitrate via metal-catalyzed aerobic oxidation followed by in situ trapping with aromatic 1,2-diamines in water as a green and efficient reaction media, is reported.
Syn Commun, 2008
Abstract: By combining a ceric ammonium nitrate (CAN)catalyzed aerobic oxidation of a-hydroxy ke... more Abstract: By combining a ceric ammonium nitrate (CAN)catalyzed aerobic oxidation of a-hydroxy ketones with a subsequent three-component condensation reaction using aldehydes and ammonium acetate, highly substituted imidazole derivatives can be assembled. This reaction is an ...
J Porphyr Phthalocya, 2006
Asian Journal of Research in Business Economics and Management, 2014
Http Dx Doi Org 10 1080 00397910701862931, Mar 12, 2008
p‐Toluenesulfonic acid catalyzed the one‐pot, three‐component synthesis of 3‐aminoimidazo[1,2‐a]p... more p‐Toluenesulfonic acid catalyzed the one‐pot, three‐component synthesis of 3‐aminoimidazo[1,2‐a]pyridines and pyrazines through a condensation reaction of a 2‐aminoazine, an aldehyde, and an isocyanide at room temperature. This methodology affords a number of 3‐aminoimidazo[1,2‐a]pyridines in reasonable yields and short reaction times without any significant optimization of the reaction conditions.
RSC Adv., 2015
ABSTRACT In this study, for the first time, carbon paste electrode (CPE) was modified with pallad... more ABSTRACT In this study, for the first time, carbon paste electrode (CPE) was modified with palladium nanoparticles supported on ethylenediamine-functionalized cellulose (PdNPs@EDAC-CPE), and its performance for electrocatalytic hydrogen production was examined. Field emission scanning electron microscopy (FESEM) and energy-dispersive X-ray spectroscopy (EDX) were used to study the morphology and structure of PdNPs@EDAC, respectively. The electrochemical characterizations were performed using cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). To optimize conditions, the influence of some parameters including the amounts of PdNPs@EDAC and binder in the electrode composition and the electrolyte type and its pH were examined on the hydrogen production process. Comparison of the proposed electrode with the CPE, CPE modified with functionalized cellulose (EDAC-CPE) and CPE modified with Pd (Pd-CPE) showed that PdNPs@EDAC-CPE has the best performance. The proposed electrode with the very low loaded Pd includes several advantages such as using cellulose as a biodegradable polymer, low cost, very good performance and ease of preparation in a large scale that could be a perfect candidate for high-purity electrocatalytic hydrogen production.
Tetrahedron Letters, Nov 18, 2009
Molecular Diversity, 2009
Bis-3-aminoimidazo[1, 2-a] pyridines, pyrimidines and pyrazines as extended pi-conjugated systems... more Bis-3-aminoimidazo[1, 2-a] pyridines, pyrimidines and pyrazines as extended pi-conjugated systems were synthesized for the first time by a novel pseudo five-component condensation of 2-aminopyridine pyrimidines and pyrazines derivatives with terephthalaldehyde or isoph-thalaldehyde and isocyanides in the presence of p-toluene-sulfonic acid in methanol.
Http Dx Doi Org 10 1080 00397911003629424, Feb 2, 2011
Abstract In this work, electrochemical oxidation of hydroquinones has been studied in the presenc... more Abstract In this work, electrochemical oxidation of hydroquinones has been studied in the presence of malononitrile as a nucleophile in aqueous solution using cyclic voltammetry and controlled potential coulometry. The results indicate that the quinones derived from hydro-quinones ...
J Org Chem, 2008
A novel one-pot pseudo-five-component synthesis of 4,5,6,7-tetrahydro-1 H-1,4-diazepine-5-carboxa... more A novel one-pot pseudo-five-component synthesis of 4,5,6,7-tetrahydro-1 H-1,4-diazepine-5-carboxamide derivatives starting from simple and readily available inputs including 2,3-diaminomaleonitrile, a cyclic or acyclic ketone, an isocyanide, and water in the presence of a catalytic amount of p-toluenesulfonic acid in aqueous medium at ambient temperature in high yields is described.
J Comb Chem, 2008
A new approach to the design of multicomponent reactions is introduced. As a result, the novel on... more A new approach to the design of multicomponent reactions is introduced. As a result, the novel one-pot synthesis of 2,3,4,5-tetrahydro-1 H-1,5-benzodiazepine-2-carboxamide derivatives using an aromatic diamine, a linear or cyclic ketone, an isocyanide, and water in the presence of a catalytic amount of p-toluenesulfonic acid at ambient temperature in high yields is described.
Mol Divers, 2010
In this study, a three-component one-pot synthesis of new 2,4-diamino-5H-chromeno[2,3-b]pyridine-... more In this study, a three-component one-pot synthesis of new 2,4-diamino-5H-chromeno[2,3-b]pyridine-3-carbonitriles derived from 2-amino-1,1,3-tricyanopropene, salicylic aldehydes and secondary cyclic amines is reported. The reaction is conducted in ethanol at ambient temperature in good-to-excellent yields.
Synthetic Communications, Oct 14, 2008
In this work, condensation reaction of 2-aminobenzamide with various alkyl, aryl, and alicyclic a... more In this work, condensation reaction of 2-aminobenzamide with various alkyl, aryl, and alicyclic aldehydes or ketones to 2,3-dihydroquinazolin-4(1H)-one derivatives in the presence of a catalytic amount of ammonium chloride in ethanol at room temperature is described. This reaction can be classified as a click chemical synthesis because of its high yields, short reaction times, and green and efficient reaction medium.
Journal of Nanostructure in Chemistry, Oct 31, 2014
Iranian Journal of Chemistry and Chemical Engineering, Dec 1, 2007
ABSTRACT: Silica sulfuric acid is found to catalyze efficiently the condensation of o-phenylenedi... more ABSTRACT: Silica sulfuric acid is found to catalyze efficiently the condensation of o-phenylenediamines with various linear and cyclic ketones to afford the corresponding 1,5-benzodiazepines in quantitative yields under solvent-free conditions at room temperature.
Chemical Pharmaceutical Bulletin, Feb 1, 2008
The direct conversion of alpha-hydroxy ketones and alpha-keto oximes into quinoxaline derivatives... more The direct conversion of alpha-hydroxy ketones and alpha-keto oximes into quinoxaline derivatives in the presence of a catalytic amount of ceric ammonium nitrate via metal-catalyzed aerobic oxidation followed by in situ trapping with aromatic 1,2-diamines in water as a green and efficient reaction media, is reported.
Syn Commun, 2008
Abstract: By combining a ceric ammonium nitrate (CAN)catalyzed aerobic oxidation of a-hydroxy ke... more Abstract: By combining a ceric ammonium nitrate (CAN)catalyzed aerobic oxidation of a-hydroxy ketones with a subsequent three-component condensation reaction using aldehydes and ammonium acetate, highly substituted imidazole derivatives can be assembled. This reaction is an ...
J Porphyr Phthalocya, 2006
Asian Journal of Research in Business Economics and Management, 2014
Http Dx Doi Org 10 1080 00397910701862931, Mar 12, 2008
p‐Toluenesulfonic acid catalyzed the one‐pot, three‐component synthesis of 3‐aminoimidazo[1,2‐a]p... more p‐Toluenesulfonic acid catalyzed the one‐pot, three‐component synthesis of 3‐aminoimidazo[1,2‐a]pyridines and pyrazines through a condensation reaction of a 2‐aminoazine, an aldehyde, and an isocyanide at room temperature. This methodology affords a number of 3‐aminoimidazo[1,2‐a]pyridines in reasonable yields and short reaction times without any significant optimization of the reaction conditions.
RSC Adv., 2015
ABSTRACT In this study, for the first time, carbon paste electrode (CPE) was modified with pallad... more ABSTRACT In this study, for the first time, carbon paste electrode (CPE) was modified with palladium nanoparticles supported on ethylenediamine-functionalized cellulose (PdNPs@EDAC-CPE), and its performance for electrocatalytic hydrogen production was examined. Field emission scanning electron microscopy (FESEM) and energy-dispersive X-ray spectroscopy (EDX) were used to study the morphology and structure of PdNPs@EDAC, respectively. The electrochemical characterizations were performed using cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). To optimize conditions, the influence of some parameters including the amounts of PdNPs@EDAC and binder in the electrode composition and the electrolyte type and its pH were examined on the hydrogen production process. Comparison of the proposed electrode with the CPE, CPE modified with functionalized cellulose (EDAC-CPE) and CPE modified with Pd (Pd-CPE) showed that PdNPs@EDAC-CPE has the best performance. The proposed electrode with the very low loaded Pd includes several advantages such as using cellulose as a biodegradable polymer, low cost, very good performance and ease of preparation in a large scale that could be a perfect candidate for high-purity electrocatalytic hydrogen production.