A one-pot method for synthesis of reduced graphene oxide-supported Cu-Cu<sub>2</sub>
O and catalytic application in tandem reaction of halides and sodium azide with terminal alkynes
(Cu‐Cu2O@RGO) was prepared through a one‐pot reflux synthesis method. The morphology, crystal structure and composition of the prepared Cu‐Cu2O@RGO were characterized using transmission electron microscopy, X‐ray diffraction, and X‐ray photoelectron, infrared and Raman spectroscopies. Cu‐Cu2O@RGO as a heterogeneous catalyst was applied to tandem reactions of halides and sodium azide with terminal alkynes
还原氧化石墨烯(RGO)负载的Cu–Cu 2 O纳米复合材料(Cu‐Cu 2 O @ RGO)是通过单锅回流合成方法制备的。使用透射电子显微镜,X射线衍射,X射线光电子,红外和拉曼光谱学对制备的Cu‐Cu 2 O @ RGO的形态,晶体结构和组成进行了表征。Cu-Cu 2 O @ RGO作为非均相催化剂被用于卤化物和叠氮化钠与末端炔烃的串联反应,以有效合成1,4-二取代的1,2,3-三唑。而且,该催化剂显示出极好的可回收性,几乎没有金属的浸出。与均相催化剂相比,Cu‐Cu 2O @ RGO是一种绿色高效的催化剂,在串联方法合成1,2,3-三唑化合物时可回收,易于分离且高度稳定。
Synthesis and characterization of active cuprous oxide particles and their catalytic application in 1,2,3‐triazole synthesis via alkyne‐azide cycloaddition reaction in water
作者:Micky Lanster Sawkmie、Dipankar Paul、Gitumoni Kalita、Khushboo Agarwala、Pradip K. Maji、Paresh Nath Chatterjee
DOI:10.1002/jhet.3723
日期:2019.12
the catalytic prowess of the various cuprous oxide materials in the cycloaddition reaction of alkynes and azides to synthesize 1,4‐disubstituted‐1,2,3‐triazoles. A wide variety of substitutions can nicely be tolerated in our optimized reaction conditions to produce very good to excellent yields of the corresponding triazoles in water at 55 °C. The reactions are carried out in water without any assistance
An efficient and recyclable thiourea-supported copper(<scp>i</scp>) chloride catalyst for azide–alkyne cycloaddition reactions
作者:Milan Kr. Barman、Ashish Kumar Sinha、Sharanappa Nembenna
DOI:10.1039/c5gc02545a
日期:——
A reaction between two equivalents of bulky thiourea i.e., 1-3-bis(2,6-dimethylphenyl)thiourea(L) [L = (ArNH)2C=S); (Ar = 2,6-Me2C6H3)}] and CuCl2 or CuCl in THF solvent afforded a bulky thiourea stabilized copper(I) halide...
Ultrasound promoted facile one pot synthesis of triazole derivatives catalyzed by functionalized graphene oxide Cu(I) complex under mild conditions
作者:Hossein Naeimi、Rahele Shaabani
DOI:10.1016/j.ultsonch.2016.05.043
日期:2017.1
A facile onepot three component reaction of alkyl halides, sodium azide with terminal alkynes can be catalyzed by functionalized graphene oxide copper (I) complex under ultrasonic irradiation at room temperature. In this protocol, the 1,4-disubstituted 1,2,3-triazoles were afforded as target pure products in excellent yields and short reaction times. The prepared catalyst has been characterized by
Nanocomposite copper metal as an efficient heterogeneous catalyst in click synthesis of 1,2,3-triazoles in aqueous media
作者:Vajihe NEJADSHAFIEE、Hossein NAEIMI
DOI:10.3906/kim-1610-57
日期:——
Copper/periodic mesoporous organosilica (Cu/PMO) nanocomposites provided a highly active, reusable, globular, solid-phase catalyst for click chemistry. The reaction proceeds by mixing organohalides, sodium azide, alkyne, and the catalyst in an aqueous medium to afford the desired products. The cost efficiency and recyclability of the catalyst up to six runs without appreciable loss of activity and