Nanocrystalline Titania-Supported Palladium(0) Nanoparticles for Suzuki-Miyaura Cross-Coupling of Aryl and Heteroaryl Halides
作者:B. Sreedhar、Divya Yada、P. Surendra Reddy
DOI:10.1002/adsc.201100012
日期:2011.10
The Suzuki cross-coupling reaction of various aryl and heteroarylhalides with arylboronic and heteroarylboronic acids was studied using a titania-supportedpalladium(0) catalyst at room temperature under air. The conversion and selectivity results obtained for many substrates were excellent and similar to those provided by more active or even homogeneous catalysts. The methodology is similarly effective
Synthesis of symmetrical terphenyl derivatives by PdCl<sub>2</sub>-catalyzed Suzuki–Miyaura reaction of dibromobenzene using 3-(diphenylphosphino)propanoic acid as a ligand
作者:Ningning Gu、Yashuai Liu、Ping Liu、Xiaowei Ma、Yan Liu
DOI:10.1080/00397911.2015.1126606
日期:2016.1.17
ABSTRACT A simple and efficient catalytic system for PdCl2 catalyzing the Suzuki–Miyaurareaction of dibromobenzene and arylboronic acid has been developed by using 3-(diphenylphosphino)propanoic acid as a ligand in dimethylsulfoxide at 100 °C. Using this method, a series of symmetrical terphenylderivatives were obtained with remarkably good yields, up to 93%. GRAPHICAL ABSTRACT
Synthesis of Terphenyl Derivatives by Pd-Catalyzed Suzuki-Miyaura Reaction of Dibromobenzene Using 2N2O-Salen as a Ligand in Aqueous Solution
作者:Ningning Gu、Yashuai Liu、Ping Liu、Xiaowei Ma、Liu Yan、Bin Dai
DOI:10.1002/cjoc.201500446
日期:2015.10
catalyzing the Suzuki‐Miyaura reaction of dibromobenzene and arylboronic acid has been developed by using 2N2O‐salen as a ligand in H2O/EtOH (V:V=4:1) at 100°C. Using this method, the reactions of substrates containing sterically demanding ortho substituents (e.g. dibromobenzene and/or arylboronic acids) proceeded efficiently, with the corresponding terphenylderivatives being produced in moderate to
通过使用2N2O-salen作为H 2 O / EtOH(V:V = 4:1)中的配体,开发了一种简单高效的Na 2 PdCl 4催化二溴苯和芳基硼酸的Suzuki-Miyaura反应的催化系统。℃。使用该方法,含有空间上要求的邻位取代基(例如二溴苯和/或芳基硼酸)的底物的反应有效地进行,相应的三联苯衍生物以中等至极好的收率生产。此外,该方法为三联苯化合物的克级合成提供了有趣的功能。
Halogen Selectivity in Nickel Salt-Catalyzed Cross-Coupling of Aryl Grignard Reagents with Bromochlorobenzenes a Novel Synthetic Method of Unsymmetrical Terphenyl
Abstract The reactions of aryl Grignardreagents with p- and m-bromochlorobenzenes catalyzed by non-ligated NiCl2 give selectively chlorobiphenyl derivatives. By the stepwise reaction, an unsymmetrical terphenyl was synthesized in a good yield.
[EN] EFFICIENT CATALYST FOR THE FORMATION OF POLYARYL HYDROCARBONS SUITABLE AS PRECURSORS FOR POLYDENTATE ORGANOPHOSPHORUS CATALYST LIGANDS<br/>[FR] CATALYSEUR EFFICACE POUR LA FORMATION D'HYDROCARBURES POLYARYLE APPROPRIÉS EN TANT QUE PRÉCURSEURS POUR DES LIGANDS DE CATALYSEURS ORGANOPHOSPHORÉS POLYDENTÉS
申请人:EASTMAN CHEM CO
公开号:WO2018044824A1
公开(公告)日:2018-03-08
The disclosure relates to the efficient preparation of aromatic hydrocarbons useful as intermediates for di-, tri-, tetra- and poly-dentate organophosphorus ligands having value in particular as hydroformylation catalysts. The use of triarylphosphine halide catalysts have been found to be more efficient in forming these intermediates by the use of excess triarylphosphine in an amount beyond what is required to form a coordination complex.