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
spectroscopic studies. Molecular structures of complexes 1, 2 and 4 were determined by X-ray crystallography. Copper complexes (1-4) were employed as a catalyst for the [3+2] cycloaddition and A3-couplingreactions. A mutual approach of salen-type ligands and metal via active participation of ligands allow to achieve the catalytic reactions. Reaction pathways were proposed and possible intermediate species
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-
Copper(<scp>ii</scp>) carboxymethylcellulose (CMC-Cu<sup>II</sup>) as an efficient catalyst for aldehyde–alkyne–amine coupling under solvent-free conditions
作者:Xiaoping Liu、Bijin Lin、Zhuan Zhang、Hao Lei、Yiqun Li
DOI:10.1039/c6ra18742k
日期:——
three-component reaction of aldehydes, amines, and alkynes (A3 coupling) catalyzed by a recoverable copper(II) carboxymethylcellulose (CMC-CuII) catalyst has been developed, producing a diverse range of propargylamines under solvent-free conditions in good yields. The CMC-CuII catalyzed reaction is especially effective for reactions involving aromatic and aliphatic aldehydes. Highcatalyticactivity was obtained
Copper nanoparticles assembled on carboxymethylcellulose (Cu0NPs@CMC) were successfully synthesized and well characterized by FT-IR, SEM, EDS, TEM, XPS, and ICP-AES. The new prepared nanocatalyst was applied effectively as a heterogeneous catalyst for the synthesis of propargylamines via decarboxylatived A3 and classic A3 reaction under solvent-free condition. A broad spectrum of diversely polysubstituted propargylamines could be obtained in moderate to excellent yields. The present method showed several merits such as easy work-up, short reaction time, additive-free characteristic, solvent-free condition, functional group tolerance, usage of recyclable green and sustainable nanocatalyst.
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