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Chiral trifluoro diamines as convenient reagents for determining the enantiomeric purity of aldehydes by use of fluorine-19 NMR spectroscopy

✍ Scribed by Cuvinot, David; Mangeney, Pierre; Alexakis, Alexandre; Normant, Jean F.; Lellouche, Jean Paul


Book ID
118146954
Publisher
American Chemical Society
Year
1989
Tongue
English
Weight
732 KB
Volume
54
Category
Article
ISSN
0022-3263

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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