204191-43-5Relevant articles and documents
Spectroscopic Characterization of a Reactive [Cu2(μ-OH)2]2+ Intermediate in Cu/TEMPO Catalyzed Aerobic Alcohol Oxidation Reaction
Warm, Katrin,Tripodi, Guilherme,Andris, Erik,Mebs, Stefan,Kuhlmann, Uwe,Dau, Holger,Hildebrandt, Peter,Roithová, Jana,Ray, Kallol
supporting information, p. 23018 - 23024 (2021/09/09)
CuI/TEMPO (TEMPO=2,2,6,6-tetramethylpiperidinyloxyl) catalyst systems are versatile catalysts for aerobic alcohol oxidation reactions to selectively yield aldehydes. However, several aspects of the mechanism are yet unresolved, mainly because o
Development of a commercial process for (S)-β-phenylalanine (1)
Grayson, J. Ian,Roos, Juergen,Osswald, Steffen
scheme or table, p. 1201 - 1206 (2011/12/16)
The development of a commercial manufacturing route for (S)-β-phenylalanine 8, a key pharmaceutical building block, is described. The different approaches which were investigated, based on catalytic asymmetric hydrogenation of enamide intermediates and on biocatalysis using acylase and lipase hydrolyses, are compared. The lipase resolution route was chosen for scale-up, and the final two-step process, based on readily available raw materials, is shown to be robust at full manufacturing scale
Kinetic resolution of oxazinones: An organocatalytic approach to enantiomerically pure β-amino acids
Berkessel, Albrecht,Cleemann, Felix,Mukherjee, Santanu
, p. 7466 - 7469 (2007/10/03)
(Chemical Equation Presented) A profitable split: An organocatalytic resolution converts readily available racemic oxazinones 1 into valuable enantiomerically pure β-amino acid derivatives 2 (> 99% ee of the remaining 1 at 53% conversion; 88% ee of the ester 2). This catalytic ring-opening reaction requires as little as 1 mol% of the modular and readily accessible thiourea organocatalyst 3.