A New Method of Synthesis for Propargylic Amines and Ethers via Benzotriazole Derivatives Using Sodium Dialkynyldiethylaluminates
摘要:
1-(alpha-Aminoalkyl)benzotriazoles react with sodium dialkynyldiethylaluminates to give propargylic amines in excellent yields, including unsubstituted N,N-dialkyl propargylamines, which are difficult to obtain from Lithium acetylide. The reaction of alpha-benzotriazolyl alkyl ethers and sodium dialkynyldiethylaluminate in the presence of zinc iodide also gives propargylic ethers in excellent yields. Unsubstituted propargyl ethers are prepared via the desilylation of trimethylsilylpropargyl ethers.
Solvent‐free synthesis of propargylamines via A
<sup>3</sup>
coupling reaction and organic pollutant degradation in aqueous condition using Cu/C catalyst
作者:Pramod V. Rathod、John Marc C. Puguan、Hern Kim
DOI:10.1002/aoc.5986
日期:2020.12
on the efficient and operationally simple synthesis of biomass‐derived carbon as support to immobilize copper particles as a catalyst for the one‐pot synthesis of propargylamines from furfural via the A3 coupling reaction. This new catalyst showed remarkable catalytic performance leading to a 97% yield within 5 h at 80 °C using 5 mg (0.0022 mmol Cu) of Cu/C catalyst under solvent‐free condition. Moreover
A novel tetramer copper(I) complex containing diallylphosphine ligands: Synthesis, characterization and catalytic application in A3-coupling (Aldehyde-Amine-Alkyne) reactions
作者:Jennifer Rosales、Juan M. Garcia、Edward Ávila、Teresa González、David Santiago Coll、Edgar Ocando-Mavárez
DOI:10.1016/j.ica.2017.07.038
日期:2017.10
observed dynamic equilibrium in solution. The use of copper(I) complex 2 as catalyst for the synthesis of propargylamines via A3-coupling reactions has been tested. Complex 2 is capable of promoting A3-coupling reactions of both aromatic and aliphatic aldehydes with cyclic secondary amines and phenylacetylene. The reaction proceeds under mild condition and absence of solvent.
Copper(I)-N<sub>2</sub>
S<sub>2</sub>
-salen type complex covalently anchored onto MCM-41 silica: an efficient and reusable catalyst for the A<sup>3</sup>
-coupling reaction toward propargylamines
作者:Hossein Naeimi、Mohsen Moradian
DOI:10.1002/aoc.2976
日期:2013.5
The immobilization of copper complexes by covalentanchoring of the ligand on the surface of mesoporousMCM‐41 has been described. Bis[2‐(phenylthio)benzylidene]‐1,2‐ethylenediamine as a new N2S2 donor salen‐type ligand was covalentlyanchoredonto nanopores of MCM‐41 coordinated with copper (I) halide. The organic–inorganic hybrid material was achieved readily using 3‐mercaptopropyltrimethoxysilane
已经描述了通过将配体共价锚定在介孔MCM-41表面上来固定铜络合物的方法。作为新的N 2 S 2供体salen型配体的双[2-(苯硫基)亚苄基] -1,2-乙二胺共价锚定在MCM-41的纳米孔上,并与卤化铜(I)配合使用。使用3-巯基丙基三甲氧基硅烷作为反应性表面改性剂可以轻松实现有机-无机杂化材料。2-硝基苯甲醛与硫醇基团平稳反应,以形成具有甲醛基的官能化纳米多孔二氧化硅。将得到的负载的有机部分转化为硫代沙仑配体并与CuX配位(X = CN,Cl,Br,I)。通过X射线衍射N 2表征多相催化剂吸附,傅立叶变换红外光谱,漫反射紫外可见光和TGA技术表明成功将MCM-41纳米通道内的铜络合物接枝。通过醛,胺和炔烃的曼尼希缩合反应评估了异相催化剂。在该反应中,以良好至优异的产率获得了相应的炔丙基胺作为单一产物。还讨论了反应温度,溶剂,催化剂负载量,催化剂的浸出和可重复使用性等因素。使用MCM-
Highly efficient three-component (aldehyde–alkyne–amine) coupling reactions catalyzed by a reusable PS-supported NHC–Ag(I) under solvent-free reaction conditions
作者:Pinhua Li、Lei Wang、Yicheng Zhang、Min Wang
DOI:10.1016/j.tetlet.2008.09.026
日期:2008.11
The development of a highly efficient, polystyrene-supported NHC–Ag(I) catalyst for the three-component coupling reactions of aldehydes, alkynes, and amines (A3-coupling) was described. In the presence of PS–NHC–Ag(I) (2 mol %), the A3-reactions were carried out at room temperature under solvent-free reactionconditions and the corresponding propargylamines were generated in good to excellent yields
An efficient and facile one-pot synthesis of propargylamines by three-component coupling of aldehydes, amines, and alkynes via C–H activation catalyzed by NiCl2
作者:Subhasis Samai、Ganesh Chandra Nandi、M.S. Singh
DOI:10.1016/j.tetlet.2010.08.043
日期:2010.10
NiCl2 was found to be a highly efficient and effective catalyst for the one-pot three-component (A3) coupling of aldehydes, amines, and alkynes to produce propargylamines in nearly quantitative yields. Structurally divergent aldehydes, amines, and alkynes were converted into the corresponding propargylamines. No co-catalyst or activator is needed and water is the only byproduct of this novel protocol.