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31 P NMR Spectroscopy as a Powerful Tool for the Determination of Enantiomeric Excess and Absolute Configurations of α-Amino Acids

✍ Scribed by Bravo, Judith; Cativiela, Carlos; Chaves, Julio E.; Navarro, Rafael; Urriolabeitia, Esteban P.

Book ID
118146908
Publisher
American Chemical Society
Year
2003
Tongue
English
Weight
151 KB
Volume
42
Category
Article
ISSN
0020-1669

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A new method proposed for the determinat
A new method proposed for the determination of absolute configurations of α-amino acids
✍ Edison Díaz Gómez; Helmut Duddeck 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 175 KB

## Abstract Enantiopure α‐amino acids were converted to 4‐substituted 2‐aryl‐ and 2‐alkyl‐5(4__H__)‐oxazolones under partial racemization. These nonracemic mixtures were dissolved in CDCl~3~, an equimolar amount of the chiral dirhodium complex $Rh^{\rm (II)}\_{2}$[(__R__)− (+)− MTPA]~4~ (MTPA‐H = M