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1H and 31P NMR determination of the enantiomeric purity of quaternary phosphonium cations using TRISPHAT as chiral shift agent

✍ Scribed by Catherine Ginglinger; Damien Jeannerat; Jérôme Lacour; Sylvain Jugé; Jacques Uziel


Book ID
104259936
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
200 KB
Volume
39
Category
Article
ISSN
0040-4039

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✦ Synopsis


The enantiomeric purity of quaternary phosphonium cations can be easily determined in 1H and 3]p-NMR using TRISPHAT anion as chiral shift agent.


📜 SIMILAR VOLUMES


Determination of the enantiomeric purity
✍ J. Belleney; C. Bui; F. J. Carriere 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 481 KB

## 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