A Highly Active Catalyst for Palladium-Catalyzed Cross-Coupling Reactions: Room-Temperature Suzuki Couplings and Amination of Unactivated Aryl Chlorides
Ligands for metals and improved metal-catalyzed processes based thereon
申请人:——
公开号:US20040171833A1
公开(公告)日:2004-09-02
One aspect of the present invention relates to ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.
Palladium-Catalyzed β Arylation of Carboxylic Esters
作者:Alice Renaudat、Ludivine Jean-Gérard、Rodolphe Jazzar、Christos E. Kefalidis、Eric Clot、Olivier Baudoin
DOI:10.1002/anie.201003544
日期:——
Alter ego: In the presence of an appropriate palladium(0) catalyst, carboxylicesters underwent β arylation instead of the more common α‐arylation reaction with aryl halides containing an ortho electronegative substituent (see scheme; Cy=cyclohexyl). An asymmetric version of the reaction gave the product with an enantiomeric ratio of up to 77:23.
Ligands for Metals and Improved Metal-Catalyzed Processes Based Thereon
申请人:Buchwald L. Stephen
公开号:US20080033171A1
公开(公告)日:2008-02-07
One aspect of the present invention relates to novel ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.