126800-01-9Relevant academic research and scientific papers
Highly Efficient and Stable Atomically Dispersed Cu Catalyst for Azide-Alkyne Cycloaddition Reaction
Ren, Peng,Li, Qinglin,Song, Tao,Wang, Zhaozhan,Motokura, Ken,Yang, Yong
, p. 3960 - 3966 (2021)
In this study, we report a highly stable and efficient single-atom Cu dispersed on N-doped porous carbon as a superior catalyst for azide-alkyne cycloaddition reaction. A broad set of 1,4-disubstituted 1,2,3-triazoles was synthesized in high to excellent
Nano-magnetic-iron Oxides@choline Acetate as a Heterogeneous Catalyst for the Synthesis of 1,2,3-Triazoles
Heydari, Akbar,Mohammadkhani, Abolfazl
, (2021/08/09)
In this research, four cholines supported on core–shell iron oxides, Fe2O3@MgO@Ch.OAc (choline acetate), Fe2O3@MgO@Ch.OH (choline hydroxide), Fe3O4@Ch.OAc, Fe3O4@Ch.OH, were synthesized. The synthesized catalysts were tested in 1,2,3-triazoles synthesis by the reaction of nitromethane, aldehyde, and benzyl azide in EtOH as a green solvent. Among four synthesized heterogeneous catalysts, the Fe2O3@MgO@ch.OAc showed superior catalytic activity for the reaction and afforded the desired triazoles in good isolated yields under mild reaction conditions. Graphic Abstract: [Figure not available: see fulltext.]
Pyrazine Based Type-I Sensitizing Assemblies for Photoreduction of Cu(II) in ‘One-Pot Three-Component’ CuAAC Reaction Under Aerial Conditions
Kumar, Sourav,Kumar, Manoj,Bhalla, Vandana
supporting information, p. 3944 - 3950 (2021/10/19)
Photosensitizing assemblies of pyrazine derivative PDA have been developed which exhibit a high photostability, ‘lighted’ excited state, balanced redox potential, high transportation potential and activate oxygen via type-I pathway only. These PDA assemblies in combination with Cu(II) ions catalyze the CuAAC reaction via in situ reduction of Cu(II) ions without any reducing or stabilizing agent. The present protocol has wide substrate scope with recyclability of the catalytic system up to six catalytic cycles and is applicable to gram-scale synthesis.
Greener synthesis of 1,2,3-triazoles using a copper(i)-exchanged magnetically recoverable β-zeolite as catalyst
Andrade, Floyd C. D.,Costa, Elizama R.,De Albuquerque, Danilo Yano,Ferreira, Luanne E. M.,Lima, Carolina G. S.,Lima, Thiago M.,Paix?o, Márcio W.,Schwab, Ricardo S.,Silva, Domingos S. A.,Urquieta-González, Ernesto A.
, p. 15046 - 15053 (2020/10/02)
Herein, we describe the preparation and thorough characterization of a novel magnetically recoverable copper(i)-exchanged β-zeolite and its use as an efficient catalyst for the synthesis of 1,2,3-triazoles via the one-pot three-component reaction of organic halides, terminal acetylenes, and sodium azide in water. The magnetically recoverable β-zeolite could be easily separated from the reaction mixture with the aid of a magnet and reused in several consecutive reactions. Importantly, a series of characterizations studies allowed us to disclose the mechanism for the deactivation of the catalyst, and therefore to propose a method for its reactivation.
Synthesis of a novel resorcin[4]arene-glucose conjugate and its catalysis of the CuAAC reaction for the synthesis of 1,4-disubstituted 1,2,3-triazoles in water
Husain, Ali A.,Bisht, Kirpal S.
, p. 10109 - 10116 (2019/04/10)
The Cu(i)-catalyzed azide-alkyne cycloaddition (CuAAC) in aqueous media using resorcin[4]arene glycoconjugate (RG) is reported. The eight β-d-glucopyranoside moieties constructed on the resorcin[4]arene upper rim provide a pseudo-saccharide cavity that offers a suitable host environment for water-insoluble hydrophobic azido and/or alkyne substrates in water. The utility of RG was established as an efficient inverse phase transfer catalyst for the CuAAC in water as a green approach for the synthesis of 1,4-disubstituted 1,2,3-triazole species. The catalytic utility of RG (1 mol%) was demonstrated in a multicomponent one-pot CuAAC for various azido/alkyne substrates. The RG acts as a molecular host and a micro-reactor resulting in the 1,4-disubstituted 1,2,3-triazoles in excellent yield.
Truncated concave octahedral Cu2O nanocrystals with {: Hkk } high-index facets for enhanced activity and stability in heterogeneous catalytic azide-alkyne cycloaddition
Zhao, Zelun,Wang, Xue,Si, Jiaqi,Yue, Chengtao,Xia, Chungu,Li, Fuwei
supporting information, p. 832 - 837 (2018/03/05)
We report a facile synthesis of Cu2O truncated concave octahedral nanocrystals mainly with {511} high-index facets in a system of oil in water emulsion. In azide-alkyne cycloaddition with water as a green solvent, Cu2O truncated conc
CuI/Et 2 NH-Catalyzed One-Pot Highly Efficient Synthesis of 1,4-Disubstituted 1,2,3-Triazoles in Green Solvent Glycerol
Guo, Shengqiang,Zhou, Yang,Dai, Bencai,Huo, Cuimeng,Liu, Changchun,Zhao, Yongde
supporting information, p. 2191 - 2199 (2018/04/05)
A concise one-pot three-component reaction of organic halides, terminal acetylenes, and sodium azide provided an efficient route for the synthesis of 1,2,3-triazoles. A variety of 1,2,3-triazoles were prepared in good to excellent yields with green solven
Azide-alkyne cycloaddition reactions in water: Via recyclable heterogeneous Cu catalysts: Reverse phase silica gel and thermoresponsive hydrogels
Lim, Minkyung,Lee, Heejin,Kang, Minseok,Yoo, Woncheol,Rhee, Hakjune
, p. 6152 - 6159 (2018/02/14)
Functionalized reverse phase silica gel and thermoresponsive hydrogels were synthesized as heterogeneous catalysts supports. Cu(i) and Cu(ii) catalysts immobilized onto two types of supports were prepared and characterized. The copper catalyzed azide-alkyne cycloaddition was performed in water via a one-pot reaction and yielded good results. These catalysts are air stable and reusable over multiple uses.
Efficient multicomponent synthesis of 1,2,3-triazoles catalyzed by Cu(II) supported on PEI@Fe3O4 MNPs in a water/PEG300 system
Hasanpour, Zeinab,Maleki, Aziz,Hosseini, Morteza,Gorgannezhad, Lena,Nejadshafiee, Vajihe,Ramazani, Ali,Haririan, Ismaeil,Shafiee, Abbas,Khoobi, Mehdi
, p. 294 - 307 (2017/05/29)
A highly dispersible and magnetically recoverable Cu-PEI@Fe3O4 MNPs catalyst was prepared and success-fully applied in one-pot three-component coupling of terminal alkynes, sodium azide, and alkyl bromides/chlorides in water to give
Designed assembly of heterometallic cluster organic frameworks based on anderson-type polyoxometalate clusters
Li, Xin-Xiong,Wang, Yang-Xin,Wang, Rui-Hu,Cui, Cai-Yan,Tian, Chong-Bin,Yang, Guo-Yu
supporting information, p. 6462 - 6466 (2016/06/01)
A new approach to prepare heterometallic cluster organic frameworks has been developed. The method was employed to link Anderson-type polyoxometalate (POM) clusters and transition-metal clusters by using a designed rigid tris(alkoxo) ligand containing a pyridyl group to form a three-fold interpenetrated anionic diamondoid structure and a 2D anionic layer, respectively. This technique facilitates the integration of the unique inherent properties of Anderson-type POM clusters and cuprous iodide clusters into one cluster organic framework. All linked up: Two unprecedented heterometallic cluster organic frameworks were constructed through directly linking Anderson-type polyoxometalate (POM) clusters with different cuprous iodide clusters by using a rigid bifunctional tris(alkoxo) ligand under solvothermal conditions.
