Facet-Dependent Catalytic Activity of Cu<sub>2</sub>O Nanocrystals in the One-Pot Synthesis of 1,2,3-Triazoles by Multicomponent Click Reactions
作者:Kaushik Chanda、Sourav Rej、Michael H. Huang
DOI:10.1002/chem.201302065
日期:2013.11.18
highly facet‐dependent catalytic activity of Cu2O nanocubes, octahedra, and rhombicdodecahedra for the multicomponent direct synthesis of 1,2,3‐triazoles from the reaction of alkynes, organic halides, and NaN3. The catalytic activities of clean surfactant‐removed Cu2O nanocrystals with the same total surface area were compared. Rhombic dodecahedral Cu2O nanocrystalsbounded by 110} facets were much
Immobilized copper(II) on nitrogen-rich polymer-entrapped Fe<sub>3</sub>O<sub>4</sub>nanoparticles: a highly loaded and magnetically recoverable catalyst for aqueous click chemistry
magnetic copper catalyst was prepared via anchoring of copper sulfate onto multi‐layered poly(2‐dimethylaminoethyl acrylamide)‐coated magnetic nanoparticles and was characterized using various techniques. The catalyst was found to be active, effective and selective for one‐pot three‐component reaction of alkyl halide, sodium azide and alkyne, known as copper‐catalyzed click synthesis of 1,2,3‐triazoles. As
A catalytic reaction comprises several steps: providing a catalyst, wherein the catalyst is metal or metal oxide particles and at least have 110} crystal plane; using the catalyst when performing a cycloaddition reaction. By using the catalyst with high reactivity, reaction rate is dramatically promoted.
Copper(<scp>ii</scp>)-benzotriazole coordination compounds in click chemistry: a diagnostic reactivity study
作者:Edward Loukopoulos、Alaa Abdul-Sada、Gizella Csire、Csilla Kállay、Adam Brookfield、Graham J. Tizzard、Simon J. Coles、Ioannis N. Lykakis、George E. Kostakis
DOI:10.1039/c8dt01256c
日期:——
[CuI4(L1)2(L1′)2(CF3SO3)2]2·4(CF3SO3)·8(Me2CO) (5), derived from similar nitrogen-based ligands. The homogeneous catalytic activity of these compounds along with our previously reported coordinationcompounds (6–13), derived from similar ligands, is tested against the well-known Cu(I)-catalysed azide–alkyne cycloaddition reaction. The optimal catalyst [CuII(L1)2(CF3SO3)2] (10) activates the reaction to afford 1
这项诊断研究旨在阐明基于Cu(II)的配位化合物与苯并三唑基配体的催化活性。我们在这里报告了五个新的配位化合物的合成和表征,它们被配制成[Cu II(L 4)(MeCN)2(CF 3 SO 3)2 ](1),[Cu II(L 5)2(CF 3 SO 3))2 ](2),[Cu II(L 6)2(MeCN)(CF 3 SO 3)]·(CF 3 SO 3)(3),[Cu II(L 6)2(H 2 O)(CF 3 SO 3)]·(CF 3 SO 3)·2(Me 2 CO)(4)和[Cu I 4(L 1)2(L 1')2(CF 3 SO 3)2 ] 2 ·4(CF 3 SO 3)·8(Me 2 CO)(5),衍生自类似的基于氮的配体。这些化合物以及我们先前报道的配位化合物(6-13)的均相催化活性均源自相似的配体,并针对著名的Cu(I)催化的叠氮化物-炔烃环加成反应进行了测试。最佳催化剂[Cu II(L
Zinc(II) complex immobilized on amine functionalized silica gel: a novel, highly efficient and recyclable catalyst for multicomponent click synthesis of 1,4-disubstituted 1,2,3-triazoles