以高收率制备(p- Cymene)Ru II(三唑鎓-亚烷基)配合物可以合成具有三唑-二亚甲基桥的异双金属Ir III -Ru II配合物。相同的配合物也可以通过从先前报道的配合物Cp * Ir III(三唑鎓亚烷基)开始制备。已对杂双金属配合物进行了全面的电化学研究,并将结果与相关的钌和铱的同双金属三唑-二亚甲基桥连配合物进行了比较,后者的金属-金属相互作用较弱(II类,根据Robin和已检测到日期分类)。Ir-Ru络合物及其他一些相关物质(p-cymene)Ru(NHC)络合物已在新的串联过程中进行了测试,这表明芳基吡啶与1-(4-卤代苯基)乙醇的螯合辅助芳基化反应。芳基化的过程是在丙酮存在下,通过Oppenauer氧化过程将醇转化为酮。
Solvent and Base in One: Tetra-<i>n</i>
-butylammonium Acetate as a Multi-Purpose Ionic Liquid Medium for Ru-Catalyzed Directed Mono- and Di-<i>o</i>
-C-H Arylation Reactions
作者:Ya-Ling Zou、Zhen-Yu Wang、Yin-Mao Feng、You-Gui Li、Eric Assen B. Kantchev
DOI:10.1002/ejoc.201701022
日期:2017.11.16
Bu4NOAc can be a multi-purpose medium for a Ru-catalyzed directed o-C–H arylation reaction with functionalized aryl bromides. Acetate plays the role of base and Bu4N salts (excess acetate and side product bromide) behave as ionicliquids. The medium is compatible with both RuCl3·xH2O (major product: di-arylation) and [RuCl2(p-cymene)]2/(p-Tol)3P catalytic systems (major product: mono-arylation).
Bu 4 NOAc可以是多官能团介质,用于Ru催化的与官能化芳基溴化物进行的定向o -C–H芳基化反应。乙酸盐起碱的作用,Bu 4 N盐(过量的乙酸盐和副产物溴化物)起离子液体的作用。该介质与RuCl 3 · x H 2 O(主要产物:二芳基化)和[RuCl 2(p- cymene)] 2 /(p -Tol)3 P催化系统兼容(主要产物:单芳基化) 。
Recyclable Solid Ruthenium Catalysts for the Direct Arylation of Aromatic CH Bonds
Environmentally benign catalyst: A PPh3‐modified Ru/CeO2 catalyst showed excellent catalytic activity toward directCHarylation by using various aryl chlorides in the reaction (see scheme). The catalyst was found to act heterogeneously and could be recycled without significant loss of activity.
对环境无害的催化剂:通过在反应中使用各种芳基氯化物,PPh 3改性的Ru / CeO 2催化剂对直接CH芳基化反应表现出出色的催化活性(请参阅方案)。发现该催化剂具有异质作用,可以循环使用而不会显着降低活性。
Solvent-free ruthenium-catalysed triflate coupling as a convenient method for selective azole-<i>o</i>-C–H monoarylation
作者:Oumaima Abidi、Taoufik Boubaker、Jean-Cyrille Hierso、Julien Roger
DOI:10.1039/c9ob00806c
日期:——
Metal-catalysed ortho-directed C-H functionalization usually faces selectivity issues in the competition between mono- and disubstitution processes. We report herein the ruthenium-catalysed N-directed C-H monoarylation of arylpyrazoles with a selectivity of up to 96% or that generally reaches values above 80%. This selectivity is an effect of solvent-free conditions associated with sulfonate reagents, in the absence
RuCl<sub>3</sub>⋅<i>x</i> H<sub>2</sub>O-Catalyzed Direct Arylation of Arenes with Aryl Chlorides in the Presence of Triphenylphosphine
作者:Ning Luo、Zhengkun Yu
DOI:10.1002/chem.200902612
日期:2010.1.18
A simple, efficient, and economically attractive catalytic system has been developed for the directarylation of arenes with arylchlorides with the RuCl3⋅xH2O/PPh3/Na2CO3/N‐methyl‐2‐pyrrolidone system (see scheme). A remarkable effect of the nature of the base was observed, with Na2CO3 giving the best results.
一个简单的,高效和经济上有吸引力的催化体系已被开发用于芳烃的与和的RuCl芳基氯的直接芳基化3 ⋅ X ħ 2 O / PPH 3 /钠2 CO 3 / Ñ甲基-2-吡咯烷酮系统(参见方案)。观察到了碱性质的显着影响,其中Na 2 CO 3给出了最佳结果。
Ruthenium Complexes of κ(P)- and κ(P)-η<sup>6</sup>-Coordinated KITPHOS Monophosphines: Efficient Catalysts for the Direct Ortho Arylation of 2-Phenylpyridine and <i>N</i>-Phenylpyrazole with Aryl Chlorides
作者:Simon Doherty、Julian G. Knight、Carrie R. Addyman、Catherine H. Smyth、Nicholas A. B. Ward、Ross W. Harrington
DOI:10.1021/om200843f
日期:2011.11.14
P-coordinated KITPHOSmonophosphinecomplex [(p-cymene)RuCl2(KITPHOS)] in chlorobenzene at 120 °C resulted in displacement of the p-cymene to afford [κ(P)-η6-KITPHOS}RuCl2], the first example of a constrained-geometry complex in which the κ(P)-bonded diphenylphosphino group and the η6-coordinated proximal phenyl ring are connected by an unsaturated two-carbon tether; both complexes form efficient catalysts