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azide-alkyne-cycloaddition
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Cu2O nanocrystals with various morphology: Synthesis, characterization and catalytic properties
, Article Chinese Chemical Letters ; 2017 ; 10018417 (ISSN) ; Mousavi, N. A ; Amini, M ; Gautam, S ; Singh, J. P ; Chae, K. H ; Sharif University of Technology
Elsevier B.V
2017
Abstract
Cu2O nanocubes, octahedra, spheres and truncated rhombic dodecahedral were prepared and their structural, morphological, and electronic properties were investigated by X-ray diffraction analysis, X-ray absorption near edge structure, scanning electron microscope and transmission electron microscope and X-ray absorption near edge structure. Cu2O nanocrystals were successfully employed to catalyze the 1,3-dipolar cycloaddition reaction for the synthesis of 1,4-disubstituted triazoles. Cu2O nanocubes and octahedral showed the superior catalytic performance in the cycloaddition reaction. These results reveal that crystal-plane engineering of oxide catalysts is a useful strategy for developing...
Cu2O nanocrystals with various morphology: synthesis, characterization and catalytic properties
, Article Chinese Chemical Letters ; Volume 28, Issue 5 , 2017 , Pages 1125-1130 ; 10018417 (ISSN) ; Mousavi, N. A ; Amini, M ; Gautam, S ; Singh, J. P ; Chae, K. H ; Sharif University of Technology
Elsevier B.V
2017
Abstract
Cu2O nanocubes, octahedra, spheres and truncated rhombic dodecahedral were prepared and their structural, morphological, and electronic properties were investigated by X-ray diffraction analysis, X-ray absorption near edge structure, scanning electron microscope and transmission electron microscope and X-ray absorption near edge structure. Cu2O nanocrystals were successfully employed to catalyze the 1,3-dipolar cycloaddition reaction for the synthesis of 1,4-disubstituted triazoles. Cu2O nanocubes and octahedral showed the superior catalytic performance in the cycloaddition reaction. These results reveal that crystal-plane engineering of oxide catalysts is a useful strategy for developing...
Two new copper(II) complexes with chelating N,O-type bidentate ligands: synthesis, characterization, crystal structure and catalytic activity in azide–alkyne cycloaddition reaction
, Article Inorganica Chimica Acta ; Volume 466 , 2017 , Pages 398-404 ; 00201693 (ISSN) ; Bayrami, A ; Kia, R ; Amini, M ; Kershaw Cook, L. J ; Raithby, P. R ; Sharif University of Technology
Abstract
Tetra-coordinated copper(II) complexes, [CuL2] and [Cu(phox)2], were synthesized by reaction of 1-((4-bromophenylimino)methyl)naphthalen-2-ol, HL, and 2-(2′-hydroxyphenyl)-2-oxazoline, Hphox, ligands with copper acetate, respectively. The complexes were characterized using FT-IR spectroscopy, elemental analyses, and their solid state structures were confirmed by single crystal X-ray diffraction. The catalytic activity of the complexes was evaluated in one-pot azide–alkyne cycloaddition (AAC) click reaction in water without need of any additional agent. The [CuL2] complex showed high catalytic activity in this reaction and 1,2,3-triazole derivatives were produced in moderate to good...
Synthesis and Characterization of Cu(II) Complexes with an Bidentate N,O-type Schiff Base Ligands and Study of the Catalytic Properties in Click Reactions
, M.Sc. Thesis Sharif University of Technology ; Bagherzadeh, Mojtaba (Supervisor)
Abstract
Two new copper(II) complexes, [CuL2] and [Cu(phox)2], were synthesized by reaction of 1-((4-bromophenylimino)methyl)naphthalen-2-ol, HL, and 2-(2′-hydroxyphenyl)-2-oxazoline, Hphox, as ligands and copper(II) acetate mono-hydrate with the ratio 2:1 (ligand:metal), respectively. For characterization and structure determination of synthesized complexes, different techniques were performed such as FT-IR, elemental analyses (CHN), and X-ray crystallography. The geometry around Cu atom is almost square planar in both complexes. The catalytic activity of the complexes was evaluated in azide–alkyne cycloaddition reaction in water without need of any additional agent. The reaction conditions for the...
Preparation of a Polyoxotungstate-Based Inorganic-Organic Hybrid Catalyst and the Application in Sulfide Oxidation and Azide-Alkyne Cycloaddition Reactions
, M.Sc. Thesis Sharif University of Technology ; Bagherzadeh, Mojtaba (Supervisor)
Abstract
In this study polyoxotungstate-based inorganic-organic hybrid [C272H162N80Cu16.5W36O129Na9] .80.5H2O was synthesized in situ. This inorganic-organic hybrid resulted from the reaction between copper salt and sodium tungstate with the benzimidazole ligand. Combining inorganic-organic hybrid with polyoxotungstate improved the ability of this catalytic system in oxidation and cycloaddition reactions. The resulting product was identified by IR, X-ray diffraction (XRD), elemental analysis (CHNS), inductively coupled plasma (ICP-OES), field emission scanning electron microscope (FE-SEM) and EDX were technique. The catalyst was used in optimal conditions in sulfide oxidation and azide-alkyne...
SBA-15-supported Cu (II)/Schiff-base complex as an efficient and recyclable catalyst for one-pot azide-alkyne cycloaddition reaction
, Article Journal of Porous Materials ; Volume 26, Issue 5 , 2019 , Pages 1427-1433 ; 13802224 (ISSN) ; Nikbakht, F ; Ataie, S ; Sharif University of Technology
Springer New York LLC
2019
Abstract
A new complex of copper (II) was synthesized through the reaction of a Schiff-base, 4-(((2-hydroxyethyl)imino)methyl)phenol, with CuCl2·2H2O and, then, immobilization on SBA-15 support. Both immobilized and free copper complexes were characterized using different techniques such as FT-IR, elemental analysis (CHN), SEM, XRD and TEM, and were utilized as catalysts in one-pot azide-alkyne cycloaddition (AAC) reaction. Both catalysts showed high activity in conversion of various substrates to corresponding triazole compounds. The reaction was performed in water under mild condition and without any extra additives. The prepared catalyst was recovered and reused in 5 runs without any significant...
Green synthesis of CuO- And Cu2O-NPs in assistance with high-gravity- And flowering of nanobiotechnology
, Article Nanotechnology ; Volume 31, Issue 42 , 2020 ; Rabiee, N ; Bagherzadeh, M ; Kiani, M ; Fatahi, Y ; Di Bartolomeo, A ; Dinarvand, R ; Webster, T. J ; Sharif University of Technology
Institute of Physics Publishing
2020
Abstract
This study, for the first time, reports the synthesis of CuO- and Cu2O nanoparticles (NPs) using the Salvia hispanica extract by a high-gravity technique. The original green synthesis procedure led to the formation of nanoparticles with promising catalytic and biological properties. The synthesized nanoparticles were fully characterized and their catalytic activity was evaluated through a typical Azide-Alkyne Cycloaddition (AAC) reaction. The potential antibacterial activity against gram positive (S. aureus) and gram negative (E. coli) bacteria were investigated. It was shown that the antibacterial properties were independent of the NP morphology as well as of the texture of the synthesis...
SBA-15-supported copper (II) complex: an efficient heterogeneous catalyst for azide-alkyne cycloaddition in water
, Article Scientia Iranica ; Volume 25, Issue 3C , 2018 , Pages 1335-1343 ; 10263098 (ISSN) ; Mahmoudi, H ; Amini, M ; Gautam, S ; Chae, K. H ; Sharif University of Technology
Sharif University of Technology
2018
Abstract
The reaction of the functionalized mesoporous SBA-15 in absolute ethanol with copper (II) acetate afforded a novel CuII-Schiff base/SBA-15 catalyst. The compound CuII-Schiff base/SBA-15 was characterized by IR spectroscopy, small-angle X-ray diffraction (SAX), Energy Dispersive X-ray Spectroscopy (EDXS), X-ray Absorption Near Edge Structure (XANES), Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), and N2 adsorption/desorption studies. Further, the catalytic activity of this well-defined material was tested in three-component Copper-catalyzed Azide-Alkyne Cycloaddition (CuAAC) reactions to obtain 1,4-disubstituted-1,2,3-triazoles in good to excellent yields from an...
Synthesis, characterisation and crystal structure of a new Cu(II)-carboxamide complex and CuO nanoparticles as new catalysts in the CuAAC reaction and investigation of their antibacterial activity
, Article Inorganica Chimica Acta ; Volume 506 , June , 2020 ; Bagherzadeh, M ; Meghdadi, S ; Fadaei Tirani, F ; Babaie, M ; Schenk Joß, K ; Sharif University of Technology
Elsevier S. A
2020
Abstract
The bidentate carboxamide ligand N-(thiazole-2-yl) picolinamide (LH) was synthesized in the environmentally friendly ionic liquid TBAB, and the five-coordinated CuII-complex, [Cu(L)2(H2O)].CHCl3 (1) was synthesized from LH and copper(II)acetate. Cupric oxide [CuO] nanoparticles (2) have been prepared by the thermal decomposition of (1) as a new precursor at 600 °C for 3 h under air atmosphere. (1) was characterised using FT-IR spectroscopy, elemental analyses and its solid state structure was confirmed by single crystal X-ray diffraction. (2) were identified by FT-IR spectroscopy, X-ray powder diffraction, scanning electron microscopy, energy dispersive X-ray analysis and thermo-gravimetric...