57134-56-2Relevant academic research and scientific papers
Supported NHC-Benzimi@Cu Complex as a Magnetically Separable and Reusable Catalyst for the Multicomponent and Click Synthesis of 1,4-Disubstituted 1,2,3-Triazoles via Huisgen 1,3-Dipolar Cycloaddition
Chandane, Wilson,Gajare, Shivanand,Jagdale, Ashutosh,Patil, Sandip,Patil, Suresh,Pawar, Arvind,Rashinkar, Gajanan
, (2021/08/23)
In this paper, we report a novel magnetically separable silica coated copper nano-magnetite NHC-benzimi@Cu complex as heterogeneous catalyst for the multicomponent click reaction via Huisgen 1,3-dipolar cycloaddition reaction of alkyl or aryl halide, sodi
Preparation, characterization and catalytic study of a nano-inorganic composite of CuO/NiO for the regioselective synthesis of 1,4-disubstituted-1,2,3-triazoles in water
Albadi, Jalal,Beni, Zohreh Hashemi,Kiyani, Hamzeh
, (2021/10/05)
In this research, a nano-inorganic composite of CuO/NiO is prepared by co-precipitation method as an efficient recyclable nanocatalyst for the regioselective synthesis of 1,4-disubstituted-1,2,3-triazoles in water. The catalyst was characterized by severa
Highly efficient synthesis of silica-coated magnetic nanoparticles modified with iminodiacetic acid applied to synthesis of 1,2,3-triazoles
Godarzbod, Farideh,Mirjafary, Zohreh,Saeidian, Hamid,Rouhani, Morteza
, (2020/12/18)
Great efforts have been made to discover new catalysts to facilitate synthesis of organic fine chemicals. In this research, a new silica-coated magnetic nanoparticles functionalized by iminodiacetic acid (Fe3O4@SiO2@IDA) w
Dendrimer-encapsulated copper(II) immobilized on Fe3O4@SiO2 NPs: a robust recoverable catalyst for click synthesis of 1,2,3-triazole derivatives in water under mild conditions
Sardarian, Ali Reza,Mohammadi, Fattah,Esmaeilpour, Mohsen
, p. 1437 - 1456 (2019/01/11)
Abstract: In this paper, we have introduced Fe3O4@SiO2-dendrimer-encapsulated Cu(II) as a heterogeneous reusable catalyst for Cu-catalyzed azide-alkyne cycloaddition (CuAAC) reaction in good to excellent yields at ambient
Simple preparation of cuprous oxide nanoparticles for catalysis of azide–alkyne cycloaddition
Amini, Mojtaba,Ramezani, Sakine,Anbari, Alireza Pourvahabi,Beheshti, Abolghasem,Gautam, Sanjeev,Chae, Keun Hwa
, p. 166 - 169 (2018/04/20)
Cuprous oxide (Cu2O) nanoparticles were prepared by two simple methods and their structural, morphological and electronic properties were investigated by X-ray diffraction analysis, X-ray absorption near-edge structure, energy dispersive X-ray analysis and scanning electron microscopy. Cuprous oxide nanoparticles efficiently catalyse 1,3-dipolar cycloaddition of a variety terminal alkynes and organic azides producing the corresponding 1,2,3-triazole derivatives in excellent yields without use of any additives. Phenylacetylene and benzyl chloride were chosen as model starting compounds for the optimisation of the reaction conditions, such as effect of solvent, reaction temperature and time of reaction in the presence of a-Cu2O nanoparticles as a catalyst. The results showed that using cuprous oxide nanoparticles (0.035 mmol) and heating at 70 °C in water, the reaction of phenylacetylene with benzyl chloride and sodium azide gave 1-benzyl-4-phenyl-1H-1,2,3-triazole almost quantitatively in 6 h of reaction time. A study of the recyclability and reusability of the catalyst revealed that a-Cu2O could be reused at least five times without significant loss of yield.
Copper(I)-catalyzed tandem reaction: Synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and alkynes
Israr, Muhammad,Ye, Changqing,Muhammad, Munira Taj,Li, Yajun,Bao, Hongli
, p. 2916 - 2922 (2018/12/13)
A copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction for the synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and terminal alkynes is reported. The alkyl carboxylic acids is for the first time being used as the alkyl azide precursors in the form of alkyl diacyl peroxides. This method avoids the necessity to handle organic azides, as they are generated in situ, making this protocol operationally simple. The Cu(I) catalyst not only participates in the alkyl diacyl peroxides decomposition to afford alkyl azides but also catalyzes the subsequent CuAAC reaction to produce the 1,2,3-triazoles.
Synthesis, characterization and catalytic properties of a copper-containing polyoxovanadate nanocluster in azide–alkyne cycloaddition
Amini, Mojtaba,Bahadori Tekantappeh, Sajjad,Eftekhari-Sis, Bagher,Gohari Derakhshandeh, Parviz,Van Hecke, Kristof
, p. 1564 - 1572 (2017/05/15)
A copper-containing polyoxovanadate nanocluster, [(C2H5)4N]4[V8Cu2O24]?2H2O (1), was synthesized through reaction between the Cu(NO3)2?3H2O and [(C2H5)4N]4VO3 in the molar ratio 1 : 4. Nanocluster 1 was characterized by IR, elemental analysis, XRD, SEM, TEM, and X-ray crystallography. The catalytic activity of 1 for the azide–alkyne cycloaddition of different terminal alkynes and organic azides generated in situ from sodium azide and different organic halides was tested. The protocol could afford the corresponding products in good to excellent yield at very low catalyst loadings (3.4 Mol%) under the optimized reaction conditions.
A copper(II)-thioamide combination as a robust heterogeneous catalytic system for green synthesis of 1,4-disubstituted-1,2,3-triazoles under click conditions
Mirjafary, Zohreh,Ahmadi, Leila,Moradi, Masomeh,Saeidian, Hamid
, p. 78038 - 78046 (2015/09/28)
An efficient and practical synthesis of 1,4-disubstituted-1,2,3-triazoles under click conditions using a copper(ii)-thioamide combination as an efficient heterogeneous catalyst is disclosed. Mild reaction conditions and high yields make this method an attractive option for the preparation of triazole derivatives. The key to this procedure was the generation of Cu(I) required for the azide-alkyne cycloaddition, which was achieved by in situ reduction of Cu(II) using thiobenzanilide as reduction agent and ligand.
Cellulose supported cuprous iodide nanoparticles (Cell-CuI NPs): A new heterogeneous and recyclable catalyst for the one pot synthesis of 1,4-disubstituted-1,2,3-triazoles in water
Chavan, Pramod V.,Pandit, Kapil S.,Desai, Uday V.,Kulkarni, Makarand A.,Wadgaonkar, Prakash P.
, p. 42137 - 42146 (2014/12/11)
Cellulose supported cuprous iodide nanoparticles (Cell-CuI NPs) have been demonstrated for the first time as an efficient heterogeneous catalyst in the click synthesis of 1,4-disubstituted 1,2,3-triazoles by a one-pot three component reaction between aral
Copper salt of 12-tungstophosphoric acid: An efficient and reusable heteropoly acid for the click chemistry
Purnima,Sreenu,Bhasker,Nagaiah,Lingaiah,Reddy, B. V. Subba,Yadav
supporting information, p. 534 - 538 (2013/08/25)
Three components coupling of alkyl bromide, sodium azide and alkyne has been achieved using a catalytic amount of copper-exchanged phosphotungstic acid (Cu-TPA) in the presence of triethyl amine in DMF to afford substituted triazoles in good yields with h
