Palladium-Catalyzed Room-Temperature Acylative Suzuki Coupling of High-Order Aryl Borons with Carboxylic Acids
作者:Shufen Si、Chen Wang、Nan Zhang、Gang Zou
DOI:10.1021/acs.joc.6b00421
日期:2016.5.20
Pd(OAc)2/PPh3-catalyzed acylative Suzukicoupling of carboxylic acids with diarylborinic acids or tetraarylboronates for practical and efficient synthesis of sterically undemanding aryl ketones at room temperature. More than just cost-effective alternatives to aryl boronicacids, diarylborinic acids and tetraarylboronates displayed higher reactivity in the acylative Suzukicoupling. A variety of alkyl aryl
Sodium Tetraarylborates as Effective Nucleophiles in Rhodium/Diene-Catalyzed 1,4-Addition to β,β-Disubstituted α,β-Unsaturated Ketones: Catalytic Asymmetric Construction of Quaternary Carbon Stereocenters
A rhodium-catalyzed1,4-addition of sodium tetraarylborates to beta,beta-disubstituted alpha,beta-unsaturated ketones is described. Highly efficient asymmetric catalysis has also been achieved by employing a readily available chiral diene ligand, leading to the construction of quaternary carbon stereocenters with high enantioselectivity.
Rhodium-Catalyzed Asymmetric Arylation of Azomethine Imines
作者:Ryo Shintani、Ying-Teck Soh、Tamio Hayashi
DOI:10.1021/ol101700v
日期:2010.9.17
A rhodium-catalyzed addition of sodium tetraarylborates to azomethine imines has been described. Highly efficient asymmetric catalysis has also been achieved by employing a chiral diene ligand to give 1-(diarylmethyl)pyrazolidin-3-ones with high enantioselectivity.
Rhodium-Catalyzed Asymmetric 1,4-Addition of Sodium Tetraarylborates to β,β-Disubstituted α,β-Unsaturated Esters
作者:Ryo Shintani、Tamio Hayashi
DOI:10.1021/ol102674z
日期:2011.1.21
A rhodium-catalyzed1,4-addition of sodium tetraarylborates to β,β-disubstitutedα,β-unsaturated esters has been developed. Highly efficient asymmetric catalysis has also been described to create quaternary carbon stereocenters at the β-position of esters by tuning the ester group of substrates and employing a readily available chiral diene ligand.