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Study of the Tautomeric Equilibrium of Pyridoxine in 1,4-Dioxane/Water Mixtures by 13 C Nuclear Magnetic Resonance. Thermodynamic Characterization and Solvent Effects

✍ Scribed by Vaz, Esther; Muñoz, Luis; Llor, Juan


Book ID
120387505
Publisher
American Chemical Society
Year
2004
Tongue
English
Weight
106 KB
Volume
69
Category
Article
ISSN
0022-3263

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Transmission of the substituent effects
✍ V. A. Lopyrev; L. I. Larina; T. I. Vakul'skaya; M. F. Larin; O. B. Nefedova; E. 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 503 KB

## Abstract The substituent influence on the ^1^H and ^13^C NMR chemical shifts in 2‐substituted benzimidazoles and their anions and cations has been investigated. The transmission of the electronic effects of substituents from C‐2 to C‐5 (6) is approximately 20% less effective than that in the opp