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.
作者:Fahad S. Al-Mubaddel、Meghdad Karimi、Samira Sadeghi、Reza Ghahremani Gavinehroudi、Haleh Mohebali、Alireza Mahjoub、Riadh Marzouki、M.H. El Ouni、Akbar Heydari
DOI:10.1016/j.mcat.2021.111949
日期:2021.11
capability to interact with a wide range of amines, styrene, and terminal alkynes as participants in A3-couplingreaction. Furthermore, the developed catalyst demonstrated high accessibility of active sites, reusability, and magnetic properties, which accelerated the efficiency of the A3-couplingreaction. Moreover, the mechanistic investigations, including trapping experiments, confirmed the presence of
由于其高度可变性和非凡的特性,基于 MOF 的纳米材料被认为是有机反应中很有前途的光催化剂。在这项研究中,磁性 Co-MOF 基纳米复合材料(由 Cys-CoFe/HK 表示)是通过简单的声化学方法制备的。复合材料设计基于组件所需特性的集成和协同作用,即磁性基材的光学特性及其分离能力,金属有机骨架促进 A 3 的可取性-偶联反应,利用半胱氨酸氨基酸作为天然改性剂来修饰纳米粒子并进行有效的电荷转移。使用各种表征方法获得有关其结构特征的信息。除了在可见光照射下,所开发的复合材料在苯乙烯的有氧氧化炔丙基官能化中具有高光催化活性外,该复合材料还表现出与作为 A 3 -参与者的各种胺、苯乙烯和末端炔烃相互作用的高能力。偶联反应。此外,所开发的催化剂表现出高活性位点的可及性、可重复使用性和磁性,从而加快了 A 3的效率。-偶联反应。此外,包括捕获实验在内的机理研究证实了超氧自由基 (O 2 ● ) 和空穴
Making Copper(0) Nanoparticles in Glycerol: A Straightforward Synthesis for a Multipurpose Catalyst
coordination complex di‐μ‐hydroxobis[(N,N,N′,N′‐tetramethylethylenediamine)copper(II)] chloride [Cu(κ2‐N,N‐TMEDA)(μ‐OH)]2Cl2} have been highly efficient in C–C and C–heteroatom bond formationprocesses. This new catalytic system has proved its performance in C–N couplings and in the synthesis of differently substituted propargylic amines through cross‐dehydrogenative couplings, multi‐component reactions such
An efficient synthesis of propargylamines via C–H activation catalyzed by copper(<scp>i</scp>) in ionic liquids
作者:Soon Bong Park、Howard Alper
DOI:10.1039/b416268d
日期:——
A readily available copper(I) catalyst, in an ionic liquid, can effect three-component coupling of aldehydes, amines and alkynes to generate propargylamines in high yields.
一种 readily available (易得的)铜(I) 催化剂,使用离子液体,可以实现醛、胺和炔烃的三组分耦合,生成高产率的丙炔胺。
A Simple and Economic Synthesis of Propargylamines by CuI-Catalyzed Three-Component Coupling Reaction with Succinic Acid as Additive
A practical and efficient method was developed for the synthesis of propargylamines in a one-pot procedure from aldehydes, amines, and alkynes by using CuI as catalyst and succinic acid as additive. By using this protocol, a wide range of propargylamines was obtained in high yields.
Microwave-Promoted Three-Component Coupling of Aldehyde, Alkyne, and Amine via C−H Activation Catalyzed by Copper in Water
作者:Lei Shi、Yong-Qiang Tu、Min Wang、Fu-Min Zhang、Chun-An Fan
DOI:10.1021/ol049936t
日期:2004.3.1
[reaction: see text] An efficient three-componentcoupling of aldehyde, alkyne, and amine to generate propargylamines has been effected under microwave irradiation in water using only CuI catalyst without the noble metal cocatalyst. This method has proved to be applicable to a wide range of substrates. In addition, the preliminary experiment using (S)-proline methyl ester as a chiral source demonstrated