Kinetic Resolution of 5-Substituted Oxazinones with Bifunctional Chiral Base/Squaramide Organocatalysts
作者:Albrecht Berkessel、Serap Eröksüz、Jörg Neudörfl
DOI:10.1055/s-0036-1588852
日期:2017.7
5-Substituted oxazinones provide N-protected β2-amino acid esters upon alcoholytic ring opening. Thus far, this access to enantiopure β2-amino acids has been restricted to the use of enzymes (hydrolases) as catalysts for the kineticresolution of racemic 5-substituted oxazinones, and branched alkyl or ortho-substituted aryl groups on the substrate oxazinone’s 5-position were typically not tolerated