Correction to “Dynamic Kinetic Resolution of α-Keto Esters via Asymmetric Transfer Hydrogenation”
作者:Kimberly M. Steward、Emily C. Gentry、Jeffrey S. Johnson
DOI:10.1021/jacs.5b00787
日期:2015.3.18
when the reduction was conducted at ambient temperature for 24 h, followed by heating for 16 h at 70 °C. Lactone 2d was similarly prepared in 98% yield (dr >30:1 dr, er 95:5, two runs). Using α-keto ester 1h as a substrate, the major diastereomer of lactone 2h was isolated in 78% yield (crude dr = 7:1, er 95:5, two runs) using this updated procedure. We regret the error and suggest using this revised
Asymmetric Synthesis of Diverse Glycolic Acid Scaffolds via Dynamic Kinetic Resolution of α-Keto Esters
作者:Kimberly M. Steward、Michael T. Corbett、C. Guy Goodman、Jeffrey S. Johnson
DOI:10.1021/ja3102709
日期:2012.12.12
The dynamickineticresolution of α-keto esters via asymmetric transfer hydrogenation has been developed as a technique for the highly stereoselective construction of structurally diverse β-substituted-α-hydroxy carboxylic acid derivatives. Through the development of a privileged m-terphenylsulfonamide for (arene)RuCl(monosulfonamide) complexes with a high affinity for selective α-keto ester reduction
Dynamic Kinetic Resolution of α-Keto Esters via Asymmetric Transfer Hydrogenation
作者:Kimberly M. Steward、Emily C. Gentry、Jeffrey S. Johnson
DOI:10.1021/ja3027136
日期:2012.5.2
The dynamic kineticresolution of β-aryl α-keto esters has been accomplished using a newly designed (arene)RuCl(monosulfonamide) transfer hydrogenation catalyst. This dynamic process generates three contiguous stereocenters with remarkable diastereoselectivity through a reduction/lactonization sequence. The resulting enantioenriched, densely functionalized γ-butyrolactones are of high synthetic utility