“Bulky-Yet-Flexible” α-Diimine Palladium-Catalyzed Reductive Heck Cross-Coupling: Highly Anti-Markovnikov-Selective Hydroarylation of Alkene in Air
Xu-Wen Yang, Donghui Li, A‐Xiang Song, Feng‐Shou Liu
Abstract
To pursue a highly 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 palladium complexes and the catalytic properties was investigated. It was revealed that the"bulky-yet-flexible"palladium complexes allowed highly anti-Markovnikov-selective hydroarylation of alkenes with (hetero)aryl bromides under aerobic conditions. Further synthetic application of the present protocol could provide rapid and straightforward access to functional and biologically active molecules.
Topics & Concepts
Markovnikov's ruleChemistryAlkenePalladiumCatalysisDiimineHeck reactionCoupling (piping)Organic chemistryCombinatorial chemistryPolymer chemistryRegioselectivityMechanical engineeringEngineeringCatalytic C–H Functionalization MethodsCatalytic Cross-Coupling ReactionsAsymmetric Hydrogenation and Catalysis