Palladium-Catalyzed Intermolecular Alkene Carboacylation via Ester C–O Bond Activation
作者:Haley K. Banovetz、Kevin L. Vickerman、Colton M. David、Melisa Alkan、Levi M. Stanley
DOI:10.1021/acs.orglett.1c00940
日期:2021.5.7
We report palladium-catalyzed intermolecular carboacylation of alkenes with ester electrophiles and tetraarylborate nucleophiles. Bicyclic alkenes react with a variety of pentafluorophenyl benzoate and alkanoate esters and sodium tetraarylborates to form ketone products in ≤99% yields. These reactions occur in the absence of a directing group and demonstrate esters are competent acyl electrophiles
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
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.
Rhodium-Catalyzed Asymmetric Arylation of <i>N</i>-(<i>tert</i>-Butanesulfinyl)imines with Sodium Tetraarylborates
作者:Leleti Rajender Reddy、Aditya P. Gupta、Eric Villhauer、Yugang Liu
DOI:10.1021/jo2024224
日期:2012.1.20
A diastereoselective rhodium-catalyzed arylation of N-(tert-butanesulfinyl)imines with sodium tetraarylborates is described. This method is general for constructing various chiral α-branchedamines and 2-substituted pyrrolidines with high diastereoselectivity. A practical asymmetric approach to access chiral amines has been developed involving the use of air-stable Rh catalysts and reagents and in