Enantioselective Synthesis of Atropisomeric Biaryls using Biaryl 2,5‐Diphenylphospholanes as Ligands for Palladium‐Catalysed Suzuki‐Miyaura Reactions
作者:Liam Byrne、Christian Sköld、Per‐Ola Norrby、Rachel H. Munday、Andrew R. Turner、Peter D. Smith
DOI:10.1002/adsc.202001211
日期:2021.1.5
describe the development of biaryl2,5‐diphenylphospholanes as a new class of C2‐symmetric, monodentate ligands for asymmetric Suzuki‐Miyaura (ASM) reactions. Screening of a series of exemplary phospholanes led to the identification of two ligands that were used to prepare a range of atropisomericbiaryl and heterobiaryl products with good to excellent levels of enantioselectivity (up to 97:3 e.r.) under
Ligands for Transition-Metal-Catalyzed Cross-Couplings, and Methods of Use Thereof
申请人:Buchwald Stephen L.
公开号:US20090221820A1
公开(公告)日:2009-09-03
Ligands for transition metals are disclosed herein, which may be used in various transition-metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The disclosed methods provide improvements in many features of the transition-metal-catalyzed reactions, including the range of suitable substrates, number of catalyst turnovers, reaction conditions, and efficiency. For example, improvements have been realized in transition-metal-catalyzed cross-coupling reactions.