摘要一系列不饱和官能化的银(I)N杂环卡宾[{(κC -C 7 N 2 H 10)AgCl} 2](1a),[{(κC -C 8 N 2 H 12)2} 2 Ag] [Ag 2 Cl 4](1b),[{(κC -C 9 N 2 H 14)2 Ag} 2] [Ag 2 Cl 4](1c)和[{(κC -C 12 N 2 H 14)2 Ag} 2] [Ag 2 Cl 4](1d)已被合成并用作金属转移剂以形成相应的Au(I)和Cu(I)配合物。1a-d与[Au(SMe 2)Cl]或CuI反应生成混合金属双卡宾化合物[(κC -C 7 N 2 H 10)2 M] [AgCl 2](M = Au 2a; Cu 3a),[{(κC -C 8 N 2 H 12} 2} 2 M] [Ag 2 Cl 4](M = Au 2b; Cu 3b),[{(κC -C 9 N 2 H 14) 2 M} 2] [Ag
已经提出了具有4-乙烯基苄基取代基并且具有氯或双(三氟甲磺酰基)酰胺阴离子的两个胺衍生的离子液体的合成和全光谱(NMR,MS,IR),热(DSC)和离子色谱表征。1之间的依赖关系分析进行了所选质子的1 H NMR化学位移值以及阳离子和阴离子的结构。文献中以前没有描述过对所得化合物进行离子色谱分析的结果。在DSC测量和电子束聚合实验的基础上,简要介绍了所选分离出的化合物的聚合潜能。提到的实验表明,所提出的离子液体在温度(DSC)或电子束辐照下,无论是溶液形式还是纯形式,都易于聚合,形成微米级的固态聚合物。
Poly(ionic liquid) and macrocyclic polyoxometalate ionic self-assemblies: new water-insoluble and visible light photosensitive catalysts
作者:Rosa Ngo Biboum、Floriant Doungmene、Bineta Keita、Pedro de Oliveira、Louis Nadjo、Bénédicte Lepoittevin、Philippe Roger、François Brisset、Pierre Mialane、Anne Dolbecq、Israel M. Mbomekalle、Céline Pichon、Panchao Yin、Tianbo Liu、Roland Contant
DOI:10.1039/c1jm14573h
日期:——
Several poly(ionic liquid)s (PILs) were synthesized and assembled with a multielectronic-process sustaining polyoxometalate (POM) into new green and water-insoluble nanomaterials (POM@PILs). They are visible light photosensitive, unlike their two components. A synergic effect was highlighted for the first time. POM@PILs achieve complete photodegradation of AO7 in aerobic media. The photocatalysts were recoverable and recyclable.
Polymer-Supported Palladium(II) Carbene Complexes: Catalytic Activity, Recyclability, and Selectivity in C−H Acetoxylation of Arenes
作者:Maitham H. Majeed、Payam Shayesteh、L. Reine Wallenberg、Axel R. Persson、Niclas Johansson、Lei Ye、Joachim Schnadt、Ola F. Wendt
DOI:10.1002/chem.201700777
日期:2017.6.22
naphthalene compared to the best homogeneous catalysts. The new polymer-supportedcatalysts maintain the original oxidation state of PdII after repeated catalyticreactions, and exhibit no significant leaching of palladium. In addition, the new catalysts have been successfully recovered and reused without loss of activity over several cycles of reactions.
Polymer-Supported <i>N</i>-Heterocyclic Carbene−Palladium Complex for Heterogeneous Suzuki Cross-Coupling Reaction
作者:Jong-Ho Kim、Jung-Woo Kim、Mohammadreza Shokouhimehr、Yoon-Sik Lee
DOI:10.1021/jo050721m
日期:2005.8.1
polymer-supported N-heterocyclic carbene (NHC) precursor for palladiumcomplex by suspension polymerization. To prepare this polymer-supported NHC precursor, 1-methyl-3-(4-vinylbenzyl)imidazolium hexafluorophosphate, [MVBIM][PF6-], was synthesized as a monomer and copolymerized with styrene and DVB in water. This polymer-supported NHC precursor with imidazolium as a ligand, which exists solely on the
Imidazolium functionalized carbon nanotubes for the synthesis of cyclic carbonates: reducing the gap between homogeneous and heterogeneous catalysis
作者:M. Buaki-Sogó、A. Vivian、L. A. Bivona、H. García、M. Gruttadauria、C. Aprile
DOI:10.1039/c6cy01068g
日期:——
Single walledcarbonnanotubes (SWCNTs) were functionalized with imidazolium salts bearing vinyl functionalities. An extremely high loading of active species was achieved through a straightforward one-pot procedure involving self-assembly of the imidazolium moieties followed by radical initiated polymerization of the double bonds. The materials were extensively characterized by transmission electron
A Concept of Supported Amino Acid Ionic Liquids and Their Application in Metal Scavenging and Heterogeneous Catalysis
作者:Wen Chen、Yuanyuan Zhang、Liangbo Zhu、Jingbo Lan、Rugang Xie、Jingsong You
DOI:10.1021/ja073633n
日期:2007.11.1
heterogeneous catalysts. These materials have been investigated in the CuI-catalyzed N-arylation of nitrogen-containing heterocycles and exhibit much higher catalytic activity and a more extensive structural range of aryl and heteroaryl halides than those exhibited by free L-proline in combination with CuI both in the ionic liquid ([BMIM][BF4]) and in the corresponding homogeneous reaction conditions. The CuI-soaked
通过改性聚苯乙烯载体的咪唑鎓阳离子与 L-脯氨酸的离子对偶联,首次开发了新型负载型离子液体。这些材料在没有非固定化离子液体的帮助下显示出有效的金属清除能力(例如 CuI、Pd(OAc)2、Pd0 和 IrCl3),这依赖于与氮原子和L-脯氨酸部分的 COO- 基团、静电力和空间保护。所得金属浸渍的负载型离子液体可用作有效的多相催化剂。这些材料已在 CuI 催化的含氮杂环的 N-芳基化中进行了研究,与游离 L-脯氨酸与 CuI 结合所表现出的催化活性和芳基和杂芳基卤化物的结构范围相比,它们表现出更高的催化活性和更广泛的结构范围。离子液体 ([BMIM][BF4]) 和相应的均相反应条件。浸渍过CuI的催化剂4a-2可以循环使用至少九次而没有任何显着的活性损失。据我们所知,我们的催化过程是迄今为止报道的咪唑与芳基卤化物 N-芳基化的最有效方法之一。此外,浸Pd的材料4a-2在苯乙烯无溶剂氢化成乙苯中也显示出较高的催化活性。