Asymmetric addition of a nitrogen nucleophile to an enoate in the presence of a chiral phase-transfer catalyst: A novel approach toward enantiomerically enriched protected β-amino acids

2012 ◽  
Vol 23 (2) ◽  
pp. 202-209 ◽  
Author(s):  
Markus Weiß ◽  
Sonja Borchert ◽  
Emmanuelle Rémond ◽  
Sylvain Jugé ◽  
Harald Gröger
Keyword(s):  
Amino Acids ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Chiral Phase ◽  
Asymmetric Addition ◽  
Novel Approach ◽  
Nitrogen Nucleophile

scholarly journals Quaternary β2,2-amino acid derivatives by asymmetric addition of isoxazolidin-5-ones to para-quinone methides

2020 ◽  
Vol 56 (4) ◽  
pp. 579-582 ◽  
Author(s):  
Andreas Eitzinger ◽  
Michael Winter ◽  
Johannes Schörgenhumer ◽  
Mario Waser
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Amino Acid Derivatives ◽  
Quinone Methides ◽  
Chiral Phase ◽  
Asymmetric Addition

Novel densely functionalized β2,2-amino acids were obtained in almost enantiopure form using down to 20 ppm of a chiral phase-transfer catalyst.

Synthesis of β-hydroxy-α-amino acids by aldol condensation using a chiral phase transfer catalyst

Tetrahedron ◽  
1991 ◽  
Vol 47 (29) ◽  
pp. 5367-5378 ◽  
Author(s):  
Catherine M. Gasparski ◽  
Marvin J. Miller
Keyword(s):  
Amino Acids ◽  
Phase Transfer ◽  
Aldol Condensation ◽  
Phase Transfer Catalyst ◽  
Chiral Phase
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