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one-pot-synthesis
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SnCl4/SiO2: an efficient heterogeneous alternative for one-pot synthesis of β-acetamidoketones
, Article Journal of the Chinese Chemical Society ; Volume 56, Issue 2 , 2009 , Pages 386-391 ; 00094536 (ISSN) ; Mahmoodi Hashemi, M ; Sadeghi, B ; Emtiazi, H ; Sharif University of Technology
2009
Abstract
Enolizable ketones have been reacted in a one-pot method with aromatic aldehydes, acetyl chloride and acetonitrile at room temperature in the presence of SnCl4/SiO2 to furnish the corresponding β-acetamidoketones in improved yields. Acetylation of an aromatic hydroxyl group was observed while using 4-hydroxybenzaldehyde or vanillin and the corresponding β-acetamidoketones were isolated in an excellent yield
Versatile and large-scale synthesis of functional dithiocarbamates in water
, Article Synthetic Communications ; Volume 41, Issue 1 , Dec , 2011 , Pages 94-99 ; 00397911 (ISSN) ; Aryanasab, F ; Tourkian, L ; Saidi, M. R ; Sharif University of Technology
2011
Abstract
Structural diversity is possible in direct access to functional dithiocarbamates based on a highly efficient and simple one-pot reaction of CS2, amines, and alkyl halides in nearly quantitative yields in water
A convenient synthesis of 3-formyl-2-thioacetamide-indole derivatives via the one-pot reaction of indolin-2-thiones, isocyanides and chloroacetylchloride
, Article Tetrahedron Letters ; Volume 56, Issue 52 , 2015 , Pages 7190-7192 ; 00404039 (ISSN) ; Matloubi Moghaddamb, F ; Sadeghi Erami, M ; Sharif University of Technology
Abstract
An efficient method has been developed to construct 3-formyl-2-thioacetamide-indoles via a one-pot, two-step procedure involving condensation of isocyanides with indolin-2-thiones to give a 3-aminomethylene-indolin-2-thione intermediate, followed by regioselective reaction with chloroacetylchloride and subsequent hydrolysis
Dithiocarbamate as an efficient intermediate for the synthesis of 2-amino-1,3,4-thiadiazoles in water
, Article Tetrahedron Letters ; Volume 51, Issue 5 , February , 2010 , Pages 790-792 ; 00404039 (ISSN) ; Ziyaei Halimehjani, A ; Saidi, M. R ; Sharif University of Technology
2010
Abstract
A new and facile protocol for the synthesis of 2-amino-1,3,4-thiadiazoles in water is described. Reaction of acid hydrazides with easily prepared dithiocarbamates gives the corresponding thiadiazoles in moderate to excellent yields. 2-Amino-1,3,4-oxadiazoles were not observed as side products using this procedure
Rapid and efficient one-pot synthesis of 1,4-dihydropyridine and polyhydroquinoline derivatives through the hantzsch four component condensation by zinc oxide
, Article Journal of the Iranian Chemical Society ; Volume 6, Issue 2 , 2009 , Pages 317-324 ; 1735207X (ISSN) ; Saeidian, H ; Mirjafary, Z ; Sadeghi, A ; Sharif University of Technology
2009
Abstract
A one-pot four-component reaction of aldehydes, ethyl acetoacetate/5,5-dimethyl-1,3-cyclohexanedione, ethyl acetoacetate and ammonium acetate in the presence of 10 mol% of ZnO as a heterogeneous catalyst for the synthesis of corresponding 1,4-dihydropyridine and polyhydroquinoline derivatives via the Hantzsch condensation is described. The present methodology offers several advantages such as simple procedure, excellent yields, and short reaction time
A facile green synthesis of MgCoFe2O4 nanomaterials with robust catalytic performance in the synthesis of pyrano[2,3-d]pyrimidinedione and their bis-derivatives
, Article Molecular Diversity ; 2020 ; Safari, J ; Tavakolizadeh, M ; Pourjavadi, A ; Sharif University of Technology
Springer
2020
Abstract
Abstract: In this study, an efficient, rapid and simple plant-mediated green sol–gel auto-combustion procedure was presented to synthesis magnesium–cobalt ferrite (MgCoFe2O4) nanocatalyst using an aqueous extract of apple skins as a chelating/combustion agent. The catalyst was assessed by multiple techniques, including FT-IR, XRD, FE-SEM, EDS, elemental mapping, TGA-DTA and VSM. Then, the catalytic potential of the as-prepared MgCoFe2O4 nanocatalyst was examined in the three-component condensation reaction of 1,3-dimethyl barbituric acid, aldehydes and malononitrile for the one-pot synthesis of pyrano[2,3-d]pyrimidinedione and their bis-derivatives. The obtained results indicated the...
Highly chemoselective reductive amination-coupling by one-pot reaction of aldehydes, HMDS and NaBH4
, Article Tetrahedron Letters ; Volume 49, Issue 47 , 2008 , Pages 6682-6684 ; 00404039 (ISSN) ; Akbari, E ; Khejeh Amiri, A ; Saidi, M. R ; Sharif University of Technology
2008
Abstract
An efficient and highly chemoselective synthesis of symmetrical secondary amines via reductive amination of aldehydes with inexpensive and commercially available HMDS and sodium borohydride in high to quantitative yields is reported. © 2008 Elsevier Ltd. All rights reserved
A facile green synthesis of MgCoFe2O4 nanomaterials with robust catalytic performance in the synthesis of pyrano[2,3-d]pyrimidinedione and their bis-derivatives
, Article Molecular Diversity ; Volume 25, Issue 4 , 2021 , Pages 2183-2200 ; 13811991 (ISSN) ; Safari, J ; Tavakolizadeh, M ; Pourjavadi, A ; Sharif University of Technology
Springer Science and Business Media Deutschland GmbH
2021
Abstract
Abstract: In this study, an efficient, rapid and simple plant-mediated green sol–gel auto-combustion procedure was presented to synthesis magnesium–cobalt ferrite (MgCoFe2O4) nanocatalyst using an aqueous extract of apple skins as a chelating/combustion agent. The catalyst was assessed by multiple techniques, including FT-IR, XRD, FE-SEM, EDS, elemental mapping, TGA-DTA and VSM. Then, the catalytic potential of the as-prepared MgCoFe2O4 nanocatalyst was examined in the three-component condensation reaction of 1,3-dimethyl barbituric acid, aldehydes and malononitrile for the one-pot synthesis of pyrano[2,3-d]pyrimidinedione and their bis-derivatives. The obtained results indicated the...
Zinc oxide as a useful and recyclable catalyst for the one-pot synthesis of 2,4,6-trisubstituted-1,3,5-trioxanes under solvent-free conditions
, Article Industrial and Engineering Chemistry Research ; Volume 52, Issue 28 , 2013 , Pages 9538-9543 ; 08885885 (ISSN) ; Nasr, A. H ; Rabiee, S ; Adibi, E ; Sharif University of Technology
2013
Abstract
Different aliphatic and aromatic aldehydes such as isobutyraldehyde, ethanal, n-propanal, n-butanal, n-hexanal, n-octanal, and substituted benzaldehydes were cyclotrimerized into their corresponding 2,4,6-trialkyl-1,3, 5-trioxanes in the presence of commercial bulk zinc oxide at room temperature under neat conditions within a short span of time with high yield and excellent selectivity. Liquid products were formed as a separate phase and were decanted easily, whereas solid products were isolated by simple extraction. Effect of different additives, mol % of catalyst, kind of substrate, and reaction temperature were examined on the progress of cyclotrimerization reaction
Synthesis of eight-membered hydroquinolines related to alkaloid skeletons via addition of 4-hydroxycoumarin or 4-hydroxypyran-2-one to quinolinium salts
, Article Tetrahedron ; Volume 66, Issue 21 , Jan , 2010 , Pages 3678-3681 ; 00404020 (ISSN) ; Mirjafary, Z ; Saeidian, H ; Taheri, S ; Soltanzadeh, B ; Sharif University of Technology
2010
Abstract
A new one-pot synthesis of hitherto unknown polyheterocyclic systems via tandem C-alkylation and intramolecular O-alkylation of 4-hydroxycoumarin or 4-hydroxypyran-2-one with quinolinium salts in excellent yields (71-89%) is reported. The present approach provides a powerful route into polycyclic structures containing nitrogen and oxygen related to alkaloids
Self-assembled one-pot synthesis of red luminescent CdS:Mn/Mn(OH)2 nanoparticles
, Article Journal of Luminescence ; Volume 128, Issue 12 , December , 2008 , Pages 1980-1984 ; 00222313 (ISSN) ; Taghavinia, N ; Iraji Zad, A ; Mahdavi, S. M ; Sharif University of Technology
2008
Abstract
We report a novel method of growing red luminescent (635 nm) Mn-doped CdS (CdS:Mn) nanoparticles capped by an inorganic shell of Mn(OH)2. CdSO4, Na2S2O3 and Mn(NO3)2 were used as the precursors, and thioglycerol (C3H8O2S) was employed as the capping agent and also the catalyst of the reaction. Using these materials resulted in very slow rate of the reaction and particles growth. The self-assembled one-pot process was performed at pH of 8 and Mn:Cd ratio of 10, and took about 10 days for completion. CdS:Mn nanoparticles are slowly formed in the first day of the process; however, the luminescence is weak. After 7 days, the solution turns white turbid through the formation of additional...
BF3·SiO2: an efficient reagent system for the one-pot synthesis of 1,2,4,5-tetrasubstituted imidazoles
, Article Tetrahedron Letters ; Volume 49, Issue 16 , 2008 , Pages 2575-2577 ; 00404039 (ISSN) ; Mirjalili, B. B. F ; Hashemi, M. M ; Sharif University of Technology
2008
Abstract
Silica-supported boron trifluoride (BF3·SiO2) is an efficient, readily available and reusable catalyst for the synthesis of 1,2,4,5-tetrasubstituted imidazoles using benzil, an aromatic aldehyde and an amine in the presence of ammonium acetate. This one-pot procedure is very simple, affording good to excellent yields. © 2008 Elsevier Ltd. All rights reserved
Dithiocarbamates as an efficient intermediate for the synthesis of 2-(alkylsulfanyl)thiazoles in water
, Article Tetrahedron Letters ; Volume 57, Issue 8 , 2016 , Pages 883-886 ; 00404039 (ISSN) ; Hasani, L ; Ali Alaei, M ; Saidi, M.R ; Sharif University of Technology
Elsevier Ltd
2016
Abstract
A simple, green and high-yielding procedure for the synthesis of 4-substituted-2-(alkylsulfanyl)thiazoles from the reaction of dithiocarbamates and α-halocarbonyl containing compounds in water is described. Also, a one-pot, two-step procedure for the synthesis of 2-(alkylsulfanyl)thiazoles from acetophenone and dithiocarbamates was developed. © 2016 Elsevier Ltd. All rights reserved
One-pot Three-component route for the synthesis of functionalized 4H-chromenes catalyzed by ZrOCl2·8H2O in water
, Article Journal of Heterocyclic Chemistry ; Volume 55, Issue 2 , 2018 , Pages 522-529 ; 0022152X (ISSN) ; Keshavarzi, N ; Sharif University of Technology
HeteroCorporation
2018
Abstract
An efficient method for the synthesis of functionalized 4H-chromenes via a one-pot three-component condensation reaction of a 2-hydroxybenzaldehyde with an active methylene compound and a carbon-based nucleophile in the presence of a catalytic amount of ZrOCl2·8H2O in water under thermal condition has been described. High yields, simple work-up procedure, performing reactions in water and synthesis of complex molecules with a one-pot procedure are the main advantages of this procedure. In addition, the structure of the product from the condensation of salicylaldehyde, 2-naphthol, and dimedone was confirmed by X-ray crystallography. © 2018 Wiley Periodicals, Inc
Novel one-pot synthesis of (4 or 5)-aryl-2-aryloyl-(1H)-imidazoles in water and tauto-isomerization study using NMR
, Article Tetrahedron ; Volume 65, Issue 34 , 2009 , Pages 6882-6887 ; 00404020 (ISSN) ; Tondro, T ; Hashemi, M. M ; Sharif University of Technology
2009
Abstract
A simple and green route to synthesis of (4 or 5)-aryl-2-aryloyl-(1H)-imidazoles is described. Two isomers can tautomerize to each other by the heat absorption. The tauto-isomerization process was studied by NMR technique. Acidity and stability of products were studied using B3LYP method. © 2009 Elsevier Ltd. All rights reserved
Novel one-pot, three-component synthesis of new 2-alkyl-5-aryl-(1H)- pyrrole-4-ol in water
, Article Journal of Organic Chemistry ; Volume 73, Issue 6 , 2008 , Pages 2090-2095 ; 00223263 (ISSN) ; Jajarmi, P ; Eftekhari Sis, B ; Hashemi, M. M ; Sharif University of Technology
2008
Abstract
(Chemical Equation Presented) New 2-alkyl-5-aryl-(1H)-pyrrole-4-ol derivatives were synthesized via three-component reaction of β-dicarbonyl compounds with arylglyoxals in the presence of ammonium acetate in water at room temperature. © 2008 American Chemical Society
A novel and efficient four-component synthesis of chromen–based dithiocarbamate derivatives by homogeneous catalysts under solvent-free conditions
, Article Synthetic Communications ; Volume 51, Issue 12 , 2021 , Pages 1825-1833 ; 00397911 (ISSN) ; Goudarzi, M ; Mohammadzadeh Dezag, H ; Sharif University of Technology
Bellwether Publishing, Ltd
2021
Abstract
An efficient and one-pot procedure is described for the synthesis of a variety of derivatives of 1,2-dihydrobenzo[f]chromen-3-ones and 3,4-dihydrochromen-2-ones under solvent-free conditions via a pseudo-four-component domino reaction of acetic anhydride, aryl aldehydes, glycine-based dithiocarbamates, and phenols/naphthols in the presence of l-proline and H4[Si(W3O10)4].xH2O as green catalysts. All products were made under the green strategy for the synthesis of corresponding products with excellent yields (up to 94%) and diastereoselectivity. © 2021 Taylor & Francis Group, LLC
A one-pot, three-component regiospecific synthesis of dispiropyrrolidines containing a thiophenone ring via 1,3-dipolar cycloaddition reactions of azomethine ylides
, Article Tetrahedron Letters ; Volume 54, Issue 20 , May , 2013 , Pages 2520-2524 ; 00404039 (ISSN) ; Khodabakhshi, M. R ; Ghahremannejad, Z ; Foroushani, B. K ; Ng, S. W ; Sharif University of Technology
2013
Abstract
The synthesis of new dispiropyrrolidines containing a thiophenone ring has been achieved by a one-pot, three-component 1,3-dipolar cycloaddition reaction. Unsaturated thiophenone dipolarophiles were reacted with azomethine ylides, generated in situ from sarcosine and cycloketone derivatives (isatin, ninhydrin, acenaphthoquinone), to produce the corresponding cycloadducts in good yields (70-90%). The cycloaddition reaction was found to be highly regio- and diastereoselective
Nanocrystalline copper(II) oxide-catalyzed one-pot synthesis of imidazo[1,2-a]quinoline and quinolino[1,2-a]quinazoline derivatives via a three-component condensation
, Article Synthetic Communications ; Volume 41, Issue 3 , Jan , 2011 , Pages 426-435 ; 00397911 (ISSN) ; Hosseinpour, M ; Sadjadi, S ; Sharif University of Technology
2011
Abstract
A simple, efficient, and practical procedure for the synthesis of imidazo[1,2-a]quinoline and quinolino[1,2-a]quinazoline derivatives using CuO nanoparticles as a novel catalyst in excellent yields is described. The catalyst can be recovered conveniently and reused at least four times without any loss of activity
One-pot synthesis of ZnO nanoparticles and submicron-aggregates for dye-sensitized solar cells
, Article Materials Letters ; Volume 139 , January , 2015 , Pages 433-436 ; 0167577X (ISSN) ; Nemati, A ; Malekshahi Byranvand, M ; Mohammadpour, R ; Faridi, H ; Sharif University of Technology
Elsevier
2015
Abstract
ZnO nanoparticles (NPs) and submicron aggregates (SMAs) were synthesized via a simple precipitation method by changing the amount of zinc acetate di-hydrate in absolute ethanol and synthesis time. Synthesized NPs and SMAs were characterized by FE-SEM, EDS, XRD, PL, and DRS and were used to fabricate dye-sensitized solar cells (DSSCs). The SMAs synthesized at moderate concentration (0.022 M) and with poly-dispersed distribution of the aggregates showed lower density of deep localized trap states as well as enhanced scattering features in comparison to NP-based electrode. As a result, power conversion efficiency (η) of about 2.56% with improved current density (Jsc) of 8.51 mA/cm2 were...