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-
Encapsulation of copper(I)-Schiff base complex in NaY nanoporosity: An efficient and reusable catalyst in the synthesis of propargylamines via A3-coupling (aldehyde-amine-alkyne) reactions
作者:Hossein Naeimi、Mohsen Moradian
DOI:10.1016/j.apcata.2013.03.008
日期:2013.10
microreactor containing bis[2-(phenylthio)benzylidene]-1,2-ethylenediamine copper(I) complexes, [Cu(N2S2)]X-Y (X = CN, Cl, Br, I) was successfully prepared. This nano composite was used as a catalyst in one-pot multicomponent coupling reaction of aldehydes, amines and alkynes toward synthesis of propargylamines. The copper(I) complex with N2S2 donor Schiff base ligand was readily trapped in the nanocavity
成功地制备了含有双[2-(苯硫基)亚苄基] -1,2-乙二胺铜(I)配合物[Cu(N 2 S 2)] XY(X = CN,Cl,Br,I)的纳米级微反应器。该纳米复合材料用作醛,胺和炔烃的一锅多组分偶联反应中炔丙基胺合成的催化剂。通过模板合成(TS)方法,具有N 2 S 2供体席夫碱配体的铜(I)络合物易于捕获在沸石Y的纳米腔中。在液相中进行了两个连续的过程:(i)在沸石-Y的存在下制备与2-(苯硫基)-苯甲醛配位的[Cu(MeCN)4 ] X的溶液。此过程导致包含[Cu(MeCN)通过预吸附法将2(S 2 O 2)] X络合物复合到沸石Y的纳米孔中;(ii)通过[Cu(MeCN)2(S 2 O 2)] X与1,2-乙二胺部分之间的席夫缩合,将[Cu(MeCN)2(N 2 S 2)] XY模板合成到纳米孔中NaY。所得催化剂通过光谱技术如AAS,FT-IR,BET等温线,XRD,UV-Vi
Natural Halloysite@Si(CH2)3NH2@Cu(acac)2 as an efficient nanocatalyst for the one-pot and three-component synthesis of propargylamines under solvent-free conditions
作者:Seyed Ali Mousavi-Mashhadi、Kimia Hoseinzade、Ali Shiri
DOI:10.1007/s11164-023-05181-6
日期:2024.1
A novel heterogeneous catalyst, natural halloysite@Si(CH2)3NH2@Cu(acac)2, was designed and synthesized through the functionalization of the halloysite nano clay surface by 3-aminopropyltriethoxysilane followed by copper acetylacetonate. The catalyst was characterized using various techniques such as FTIR, SEM, EDS, BET, ICP, XRD, TEM, and TGA. The catalytic activity of natural halloysite@Si(CH2)3NH2@Cu(acac)2)
Immobilized nickel nanoparticles on modified magnetic titanium dioxide: A proficient and eco-friendly nanocatalyst for the green A3-coupling synthesis of propargylamines
作者:Nasrin Moeini-Eghbali、Hossein Eshghi
DOI:10.1016/j.molstruc.2024.137727
日期:2024.6
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Silica-grafted DBU-supported NiCl2: a sustainable heterogeneous catalyst for A3 coupling
作者:P. S. Pharande、G. S. Rashinkar、D. M. Pore
DOI:10.1007/s11164-023-04980-1
日期:2023.6
Silica-graftedDBU-supportedNiCl2 complex, 1-(3-((3-(silica-trioxysilyl) propyl) amino) propyl) azepan-2-one nickel chloride (SiO2@DBU-NiCl2), has been designed and synthesized by multistep approach and characterized by FT-IR, XRD, EDS, FE-SEM, TGA and XPS. Catalytic activity of SiO2@DBU-NiCl2 has been explored for A3coupling of terminal alkynes, aldehydes and secondary amines resulting in excellent