One-pot direct C–H arylation of arenes in water catalysed by RuCl3·nH2O–NaOAc in the presence of Zn
作者:Luis A. Adrio、José Gimeno、Cristian Vicent
DOI:10.1039/c3cc43452d
日期:——
The inexpensive and commercially available catalytic system RuCl3·nH2OâNaOAcâZn is active in water for the direct CâH arylation of arenes with aryl/heteroaryl chlorides. The reaction can be accelerated by the use of microwave irradiation and can also be scaled up to a multi-gram scale with excellent isolated yields.
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。
Combination of RuCl<sub>3</sub>·xH<sub>2</sub>O with PEG – a simple and recyclable catalytic system for direct arylation of heteroarenes via C–H bond activation
作者:Lei Jian、Hai-Yu He、Jin Huang、Qian-Hui Wu、Mao-Lin Yuan、Hai-Yan Fu、Xue-Li Zheng、Hua Chen、Rui-Xiang Li
DOI:10.1039/c7ra02638b
日期:——
A simple and recyclable catalytic system for directarylation of heteroarenes via C–H bond activation was developed with a relatively inexpensive RuCl3·xH2O as a catalyst and PEG-400 as a green medium without any additive or ligand. This system not only showed excellent functional group compatibility, but also the ratio of mono- to diarylated product was easily regulated by varying the reaction conditions
通过使用相对便宜的RuCl 3 · x H 2 O作为催化剂和PEG-400作为绿色介质,没有任何添加剂或配体,开发了一种简单且可回收的催化系统,用于通过C–H键活化杂芳烃直接芳基化。该体系不仅显示出优异的官能团相容性,而且通过改变反应条件也很容易调节单芳基化产物与二芳基化产物的比例。而且,该转化可以在空气中进行,并且在0.3mol%的低催化剂负载下可以容易地按比例放大至克级。特别地,在将该催化剂循环六次之后,获得了85%的良好产率。
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
[RuCl<sub>3</sub>(H<sub>2</sub>O)<sub>n</sub>]-Catalyzed Direct Arylations with Bromides as Electrophiles
作者:Lutz Ackermann、Andreas Althammer、Robert Born
DOI:10.1055/s-2007-990838
日期:——
Catalytic amounts of [RuCl3(H2O)n] allow for direct arylations via C-H bond functionalization with aryl bromides, bearing a variety of important functional groups.