Highly Enantioselective Arylation of <i>N</i>,<i>N</i>-Dimethylsulfamoyl-Protected Aldimines Using Simple Sulfur–Olefin Ligands: Access to Solifenacin and (<i>S</i>)-(+)-Cryptostyline II
作者:Tao Jiang、Wen-Wen Chen、Ming-Hua Xu
DOI:10.1021/acs.orglett.7b00776
日期:2017.4.21
With the use of a simplesulfur–olefinligand, a highlyenantioselectiverhodium-catalyzed addition of arylboroxines to N,N-dimethylsulfamoyl-protected aldimines has been achieved, allowing access to a broad range of chiral diarylmethylamines in high yields (up to 98%) with uniformly excellent enantioselectivities (up to 99% ee). This catalyst system is also applicable to the arylation of N-tosyl arylimines
Catalytic asymmetric addition of arylboronic acids to N-Boc imines generated in situ using C2-symmetric cationic N-heterocyclic carbenes (NHCs) Pd2+ diaquo complexes
作者:Zhen Liu、Min Shi
DOI:10.1016/j.tet.2010.02.037
日期:2010.4
The catalytic asymmetricaddition of arylboronicacids to N-Boc imines generated in situ from stable and easily prepared α-carbamoyl sulfones was realized by using chiral cationic C2-symmetric N-heterocyclic carbene (NHC) Pd2+ diaquo complexes 1a–c as the catalysts, producing the corresponding adducts in good to high yields (up to 89%) and good to high enantioselectivities (up to 90% ee).
Catalytic Enantioselective Addition of Arylboronic Acids to <i>N</i>-Boc Imines Generated in Situ
作者:Hiroshi Nakagawa、Jason C. Rech、Robert W. Sindelar、Jonathan A. Ellman
DOI:10.1021/ol702045w
日期:2007.12.1
The rhodium-catalyzed addition of arylboronic acids to N-Boc imines generated in situ from stable and easily prepared alpha-carbamoyl sulfones has been developed. High enantioselectivities are observed for additions of arylboronic acids with a variety of steric and electronic properties.
Nickel-Catalyzed Enantioselective Reductive Arylation and Heteroarylation of Aldimines via an Elementary 1,4-Addition
作者:Luoqiang Zhang、Xiuhua Wang、Maoping Pu、Caiyou Chen、Peng Yang、Yun-Dong Wu、Yonggui Robin Chi、Jianrong Steve Zhou
DOI:10.1021/jacs.3c00548
日期:2023.4.19
Nickel catalysts of chiral pyrox ligands promoted enantioselective reductive arylation and heteroarylation of aldimines, using directly (hetero)aryl halides and sulfonates. The catalytic arylation can also be conducted with crude aldimines generated from condensation of aldehydes and azaaryl amines. Mechanistically, density functional theory (DFT) calculations and experiments pointed to an elementary
Highly efficient and enantioselective copper(I)-catalyzed pinacolboryl addition of N-Boc-imines is reported. By using a single chiral sulfoxide-(dialkyl)phosphine (SOP) ligand, both enantiomeric isomers of alpha-amino boronic esters were obtained through an achiral counteranion switch.