157366-46-6Relevant articles and documents
New air-stable planar chiral ferrocenyl monophosphine ligands: Suzuki cross-coupling of aryl chlorides and bromides
Jensen, Jakob F.,Johannsen, Mogens
, p. 3025 - 3028 (2003)
(Matrix presented) A novel class of planar chiral electron-rich monophosphine ligands has been developed. The modular design allows a short and efficient synthesis of an array of aryl-ferrocenyl derivatives carrying the donating bis(dicyclohexyl)phosphino moiety. These new ligands have successfully been applied in the palladium-catalyzed Suzuki cross-coupling of activated as well as nonactivated aryl chlorides at room temperature. The asymmetric coupling of an aryl bromide and an aryl boronic acid was also tested, giving ees up to 54%.
The Rational Design and Synthesis of Water-Soluble Thiourea Ligands for Recoverable Pd-Catalyzed Aerobic Aqueous Suzuki-Miyaura Reactions at Room Temperature
Chen, Wei,Lu, Xiao-Yan,Xu, Bei-Hua,Yu, Wei-Guo,Zhou, Zi-Niu,Hu, Ying
, p. 1499 - 1510 (2018/01/17)
Eight precatalysts containing carboxylic-functionalized thiourea ligands are prepared and their activities and recyclability are evaluated in aerobic aqueous Suzuki-Miyaura reactions. A bulky monothiourea-Pd complex, functionalized with four carboxylic groups, shows the best activity and recyclability in the coupling of aryl bromides with arylboronic acids. The catalyst can be reused at least five times without any significant reduction in its catalytic activity. TEM analysis and the confirmed catalytic activity of the observed black precipitate reveal that Pd nanoparticles are formed during the reactions and are stabilized by the carboxylic-functionalized thiourea ligands.
Ruthenium-catalyzed hydrogenation of carbocyclic aromatic amines: Access to chiral exocyclic amines
Yan, Zhong,Xie, Huan-Ping,Shen, Hong-Qiang,Zhou, Yong-Gui
supporting information, p. 1094 - 1097 (2018/02/23)
The first highly enantioselective hydrogenation of carbocyclic aromatic amines has been successfully realized using in situ-generated chiral ruthenium complex as catalyst, affording facile access to chiral exocyclic amines with up to 98% ee.