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Transmission of the substituent effects in 2-substituted benzimidazoles studied by 1H and 13C nuclear magnetic resonance

✍ Scribed by V. A. Lopyrev; L. I. Larina; T. I. Vakul'skaya; M. F. Larin; O. B. Nefedova; E. F. Shibanova; M. G. Voronkov

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
503 KB
Volume
15
Category
Article
ISSN
0749-1581

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✦ Synopsis

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 opposite direction. The solvent influence on the chemical shifts of protons and transmission effects in the charged forms of 2‐substituted benzimidazoles has been studied.

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