Magnetically separable Fe3O4 nanoparticles: an efficient catalyst for the synthesis of propargylamines
作者:B. Sreedhar、A. Suresh Kumar、P. Surendra Reddy
DOI:10.1016/j.tetlet.2010.02.016
日期:2010.4
Magneticallyseparable Fe3O4 nanoparticles endow with an efficient and economic route for the synthesis of propargylamines by the three-component coupling of aldehyde, amine, and alkyne through C–H activation. The reaction is especially effective for reactions involving aliphatic aldehydes and no additional co-catalyst or activator is required. High catalytic activity and ease of recovery using an
磁性可分离的Fe 3 O 4纳米粒子通过醛类,胺类和炔烃通过C–H活化的三组分偶联,提供了一种高效而经济的合成炔丙胺的途径。该反应对于涉及脂族醛的反应特别有效,不需要额外的助催化剂或活化剂。高催化活性和使用外部磁场易于回收是该催化系统的其他环保特性。催化剂循环使用五次,而催化活性没有明显损失。
Copper(I)-Catalyzed Decarboxylative Coupling of Propiolic Acids with Secondary Amines and Aldehydes
作者:Denis S. Ermolat'ev、Huangdi Feng、Gonghua Song、Erik V. Van der Eycken
DOI:10.1002/ejoc.201402338
日期:2014.8
propargylamines has been developed by copper(I)-catalyzeddecarboxylative A3-coupling reaction of an alkynylcarboxylic acid with a secondaryamine and an aldehyde. A wide range of diversely substituted propargylamines could be synthesized in high yields. The optimal reaction conditions are also effective for 3-alkylpropiolic acids and for terminal propiolicacid.
Synthesis and characterization of magnetic glycocyamine-modified chitosan as a biosupport for the copper immobilization and its catalytic activity investigation
作者:F. Rafiee、F. Rezaie Karder
DOI:10.1016/j.reactfunctpolym.2019.104434
日期:2020.1
coordination. The magnetization of modified chitosan was done using of Fe3O4 nanoparticles. In the presence of coordinated groups of glycocyamine containing amidino and carboxylate, copper ions were immobilized on this magneticbiopolymer. This new nanocomposite (Fe3O4@CSC@AG@Cu) was characterized by FT-IR, FE-SEM, EDX, XRD, VSM, DRS and ICP analysis. After which, its catalyticactivity was examined in the three
摘要Trichloro-1,3,5-triazine试剂用于壳聚糖功能化,并作为功能化壳聚糖和糖胺之间的桥梁,形成铜配位的生物配体。改性壳聚糖的磁化是使用Fe3O4纳米粒子完成的。在含有glyco基和羧酸根的糖胺的配位基团的存在下,铜离子被固定在该磁性生物聚合物上。通过FT-IR,FE-SEM,EDX,XRD,VSM,DRS和ICP分析对这种新型纳米复合材料( @ CSC @ AG @ Cu)进行了表征。此后,在脂族和芳族醛,仲环胺和苯基乙炔的三个偶联反应中,对炔丙基胺衍生物的合成进行了催化活性研究。
Postsynthetic modification of metal–organic framework as a highly efficient and recyclable catalyst for three-component (aldehyde–alkyne–amine) coupling reaction
作者:Jin Yang、Pinhua Li、Lei Wang
DOI:10.1016/j.catcom.2012.06.023
日期:2012.10
A MOF-supported Cu(I) catalyst bearing N,O-chelating ligand was prepared through postsynthetic modification of IRMOF-3 and used as an efficient heterogeneous catalyst for three-componentcoupling reaction of aldehyde, alkyne, and amine. The catalyst exhibited both high catalytic activity and stability for the reaction and the framework of Cu(I) catalyst was mainly maintained after the catalyst was