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Use of a Chiral Praseodymium Shift Reagent in Predicting the Complete Stereostructure of Glisoprenin A

✍ Scribed by Ghosh, Indranath; Kishi, Yoshito; Tomoda, Hiroshi; Omura, Satoshi


Book ID
126087997
Publisher
American Chemical Society
Year
2004
Tongue
English
Weight
84 KB
Volume
6
Category
Article
ISSN
1523-7060

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## Abstract The enantiomeric purities of disubstituted β‐lactams were determined by ^1^H and ^13^C NMR spectroscopy using tris[3‐(trifluoromethylhydroxymethylene)‐d‐camphorato]europium(III), Eu(tfc)~3~, as a chiral shift reagent. Using a [Eu(tfc)~3~]/[lactam] ratio of 0.5, most of the resonances we