Single-Component Phosphinous Acid Ruthenium(II) Catalysts for Versatile C−H Activation by Metal-Ligand Cooperation
作者:Daniel Zell、Svenja Warratz、Dmitri Gelman、Simon J. Garden、Lutz Ackermann
DOI:10.1002/chem.201504851
日期:2016.1.22
Well‐defined ruthenium(II) phosphinousacid (PA) complexes enabled chemo‐, site‐, and diastereoselective C−H functionalization of arenes and alkenes with ample scope. The outstanding catalytic activity was reflected by catalyst loadings as low as 0.75 mol %, and the most step‐economical access reported to date to angiotensin II receptor antagonist blockbuster drugs. Mechanistic studies indicated a
[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.
Catalytic amounts of economically attractive [RuCl3(H2O)(n)] allow for direct arylations via C-H bond functionalization with aryl bromides under phosphine ligand-free reaction conditions. Thereby, a variety of functionalized (hetero)aryl bromides, bearing either electron-withdrawing or electron-releasing substituents, can be employed for direct arylations of pyridine, oxazoline, pyrazole, or ketimine derivatives as pronucleophiles. (C) 2008 Elsevier Ltd. All rights reserved.
Mechanistic Insight into Direct Arylations with Ruthenium(II) Carboxylate Catalysts
作者:Lutz Ackermann、Rubén Vicente、Harish K. Potukuchi、Valentina Pirovano
DOI:10.1021/ol102187e
日期:2010.11.5
Mechanistic studies revealed ruthenium-catalyzed direct arylations to proceed through reversible C-H bond activation and subsequent rate-limiting oxidative addition with aryl halides, which led to the development of widely applicable well-defined ruthenium(II) carboxylate catalysts.
Catalytic Arylation Reactions by CH Bond Activation with Aryl Tosylates