42267-16-3Relevant articles and documents
Synthesis of α-hydroxy-β-triflamido carboxylic esters through ring-opening of alkoxycarbonyl oxiranes
Lupi, Vittoria,Albanese, Domenico,Landini, Dario,Scaletti, Davide,Penso, Michele
, p. 1675 - 1681 (2005)
The oxirane ring of 3-alkyl- and 3-arylglycidic esters has been opened with trifluoromethanesulfonamide (TfNH2) under solid-liquid heterogeneous conditions. The corresponding α-hydroxy-β-triflamido sters were produced in good yields, in a regio- and stereoselective fashion. Several reaction parameters, such as the nature of the base, the presence of a phase transfer catalyst and/or a solvent have been examined. Georg Thieme Verlag Stuttgart.
CHEMO-ENZYMATIC SYNTHESIS OF ALL ISOMERIC 3-PHENYLSERINES AND -ISOSERINES
Hoenig, H.,Seufer-Wasserthal, P.,Weber, H.
, p. 3841 - 3850 (2007/10/02)
The synthesis of all isomers of 3-phenylserines and 3-phenylisoserines in enantiomerically pure form is presented.Diastereomerically pure educts (threo/erythro-2-azido-3-butanoyloxy-3-phenyl-propionic esters, threo/erythro-3-azido-2-butanoyloxy-3-phenylpropionic esters, threo-2-butanoylamino-3-butanoyloxy-3-phenylpropionic ester, erythro-3-butanoylamino-2-butanoyloxy-3-phenyl-propionamide) were prepared from cinnamic acid derivatives or via aldol condensations of benzaldehyde and suitable enolates in few steps.These racemates were resolved with lipases from Candida cylindracea (CC) and Pseudomonas fluorescens (P) and the obtained products were hydrogenated to 3-phenylserines and -isoserines.The influence of the acyl group in the enzymatic resolution of erythro-3-azido-2-acyloxy-3-phenylpropionic esters was investigated.