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NMR investigations of proline and its derivatives: Part 5. A semi-empirical calculation of the endo-exo equilibrium of the pyrrolidine ring and its pH-dependence

✍ Scribed by K. Jankowski; F. Soler; M. Ellenberger

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
389 KB
Volume
48
Category
Article
ISSN
0022-2860

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A NMR investigation of proline and its d
A NMR investigation of proline and its derivatives. II—Conformational implications of the 1H NMR spectrum of L-proline at different pH
✍ L. Pogliani; M. Ellenberger; J. Valat 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 855 KB

## Abstract The 250 MHz ^1^H NMR spectrum of L‐proline is comprehensively analysed by computer simulation for different pH values. A fast __endo__–__exo__ interconversion has already been proposed from chemical shift and coupling constant data. A critical comparison of the vicinal coupling constant