Studies on quinoline and isoquinoline derivatives. VIII. Hydration and hydrogenation of ethynyl substituents attached to the pyridine moiety of quinoline and isoquinoline rings.
“Bulky-Yet-Flexible” α-Diimine Palladium-Catalyzed Reductive Heck Cross-Coupling: Highly Anti-Markovnikov-Selective Hydroarylation of Alkene in Air
作者:Xu-Wen Yang、Dong-Hui Li、A-Xiang Song、Feng-Shou Liu
DOI:10.1021/acs.joc.0c01509
日期:2020.9.18
regioselective and efficient reductive Heck reaction, a series of moisture- and air-stable α-diimine palladium precatalysts were rationally designed, readily synthesized, and fully characterized. The relationship between the structures of the palladiumcomplexes and the catalytic properties was investigated. It was revealed that the“bulky-yet-flexible”palladiumcomplexes allowed highly anti-Markovnikov-selective
Enantioselective dearomatization of isoquinolines by anion-binding catalysis en route to cyclic α-aminophosphonates
作者:Abhijnan Ray Choudhury、Santanu Mukherjee
DOI:10.1039/c6sc02466a
日期:——
An enantioselectivedearomatization of isoquinolines has been developed using chiral anion-bindingcatalysis. This transformation, catalyzed by a simple and easy to prepare tert-leucine-based thiourea derivative, makes use of silyl phosphite as a nucleophile and generates cyclic α-aminophosphonates. This is the first time asymmetric anion-bindingcatalysis has been applied to the synthesis of α-aminophosphonates