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NMR studies of rate processes and conformations—XVIII : Hindered nitrogen inversion in 5-membered heterocyclic amines

✍ Scribed by J.M. Lehn; J. Wagner

Book ID
108374049
Publisher
Elsevier Science
Year
1970
Tongue
French
Weight
871 KB
Volume
26
Category
Article
ISSN
0040-4020

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NMR.-Study of Nitrogen Inversion and Con
NMR.-Study of Nitrogen Inversion and Conformation of 1,5-Dihydro-isoalloxazines (‘Reduced Flavin’). Studies in the flavin series, XIX. Communication
✍ Ludwig Tauscher; Sandro Ghisla; Peter Hemmerich 📂 Article 📅 1973 🏛 John Wiley and Sons 🌐 German ⚖ 935 KB

## Abstract The pyramidal inversion of the N(5)‐centre of several reduced flavins was measured by NMR. The inversion barrier was found to be ∼10 kcal/mol in acetone solutions and to be independent of the size of the N(5) substituent. An increase of the inversion barrier of ∼5 kcal/mol was observed