Diamagnetic lanthanide tris β-diketonates as organic-soluble chiral NMR shift reagents

Chiral NMR Shift Reagents: Mixtures of L

Chiral NMR Shift Reagents: Mixtures of Lanthanide Tris (β-diketonates) with Chiral Carboxylate Anions

✍ Thomas J. Wenzel; Amy C. Bean; Sarah L. Dunham 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 423 KB 👁 1 views

## Chiral carboxylic acids such as N-(R)-1-(1-naphthyl)ethylaminocarbonyl-L-tert-leucine, N-(R)-1-(1- naphthyl)ethylaminocarbonyl-L-valine and N-(3,5-dinitrobenzoyl)-L-leucine are solubilized in chloroform by the addition of triethylamine. The resulting ion pairs are useful chiral resolving agents