Fe3O4 nanoparticles: a robust and magnetically recoverable catalyst for three-component coupling of aldehyde, alkyne and amine
作者:Tieqiang Zeng、Wen-Wen Chen、Ciprian M. Cirtiu、Audrey Moores、Gonghua Song、Chao-Jun Li
DOI:10.1039/b920000b
日期:——
A robust, safe and magnetically recoverable Fe3O4 nanoparticle catalyzed three-componentcoupling of aldehyde, alkyne, and amine (A3-coupling) was developed. A diverse range of propargylamines were obtained in moderate to high yield under mild conditions in air. The separation and reuse of the magnetic Fe3O4 nanoparticles were very simple, effective and economical.
坚固,安全且可磁回收的Fe 3 O 4 纳米粒子 催化三组分偶联 醛, 炔烃,并开发了胺(A 3偶联)。在温和的条件下,在空气中以中等至高收率获得了各种炔丙基胺。磁性Fe 3 O 4的分离与再利用 纳米粒子 非常简单,有效且经济。
Structural Diversity and Catalytic Properties in a Family of Ag(I)-Benzotriazole Based Coordination Compounds
作者:Edward Loukopoulos、Alaa Abdul-Sada、Eddy M. E. Viseux、Ioannis N. Lykakis、George E. Kostakis
DOI:10.1021/acs.cgd.8b00960
日期:2018.9.5
their variety coordination abilities. Interestingly, certain structures exhibit an isomerism effect (L1T-L3T) in the benzotriazole unit when in solid state; a series of studies are indicative of the 1,1-form which is generally dominant in solution even in cases where the crystal structure does not contain this tautomer. The homogeneous catalytic efficacy of all compounds against the well-known multicomponent
在这项工作中,我们研究了一系列基于半刚性苯并三唑的配体(L 1 –L 3)的配位化学,以及低配位数但用途广泛的Ag I离子。这导致了九种新的配位化合物[Ag(L 1)(CF 3 CO 2)](1),[Ag 2(L 1T)2(CF 3 SO 3)2 ]·2Me 2 CO(2), [Ag(L 2T)(ClO 4)(Me 2 CO)](3),[Ag(L 2T)(BF4)(Et 2 O)](4),[Ag 2(L 3T)2(ClO 4)2 ] 2(5),[Ag(L 3)(NO 3)](6),[Ag 2( L 3T)2(CF 3 CO 2)2 ](7),[Ag 2(L 3T)(CF 3 SO 3)2 ](8)和[Ag 2(L 3T)2(CF 3 CF 2 CO 2)2 ]·2Me 2 CO(9)。这些化合物显示出结构的多样性,包括二聚体(5,7,9)和一维(1D)(3,4,6)和二维(2D)(1,2,
Three-component coupling of aldehyde, alkyne, and amine catalyzed by silver in ionic liquid
作者:Zigang Li、Chunmei Wei、Liang Chen、Rajender S. Varma、Chao-Jun Li
DOI:10.1016/j.tetlet.2004.01.044
日期:2004.3
A three-componentcoupling of aldehyde, alkyne, and amine was developed by using gold, copper, or silver as catalysts in ionic liquid.
通过在离子液体中使用金,铜或银作为催化剂,开发了醛,炔烃和胺的三组分偶联剂。
Shedding light on the use of Cu(<scp>ii</scp>)-salen complexes in the A<sup>3</sup> coupling reaction
作者:Stavroula I. Sampani、Victor Zdorichenko、Marianna Danopoulou、Matthew C. Leech、Kevin Lam、Alaa Abdul-Sada、Brian Cox、Graham J. Tizzard、Simon J. Coles、Athanassios Tsipis、George E. Kostakis
DOI:10.1039/c9dt04146j
日期:——
phenoxido salen based ligands. These ligands orchestrate topological control permitting alkyne binding with concomitant activation of the C–H bond and simultaneously acting as a template temporarily accommodating the abstracted acetylenic proton, and continuously generating, via in situ formed radicals and a Single Electron Transfer (SET) mechanism, a transient Cu(I) active site to facilitate this transformation
Iron-catalyzed three-component coupling of aldehyde, alkyne, and amine under neat conditions in air
作者:Wen-Wen Chen、Rene V. Nguyen、Chao-Jun Li
DOI:10.1016/j.tetlet.2009.03.182
日期:2009.6
Various iron-salts (and complexes) and especially iron(III) chloride catalyzed the three-componentcoupling of aldehyde, alkyne, and amine to generate propargylic amines with high efficiency under neat conditions in air. The iron-catalyzed reaction is particularly effective for reactions involving aliphatic aldehydes. The reaction is not sensitive to and occurs smoothly in water and in air. No additional