𝔖 Bobbio Scriptorium
✦   LIBER   ✦

NMR investigation of hydrogen bonding and 1,3-tautomerism in 2-(2-hydroxy-5-substituted-aryl) benzimidazoles

✍ Scribed by V. Sridharan; S. Saravanan; S. Muthusubramanian; S. Sivasubramanian

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
124 KB
Volume
43
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The 1,3‐tautomerism associated with 2‐(2‐hydroxy‐5‐substituted‐aryl)benzimidazoles was studied in different solvents. The effect of hydrogen bonding involving the hydroxyl group of the 2‐aryl ring on the tautomerism was investigated using NMR spectroscopy. The influence of the solvent concentration on 2‐(2‐hydroxy‐5‐chloroaryl)benzimidazole was studied in acetone‐d~6~ and DMSO‐d~6~. Copyright © 2005 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Carbon–13 NMR studies of tautomerism in
Carbon–13 NMR studies of tautomerism in some 2-substituted imidazoles and benzimidazoles
✍ E. Paul Papadopoulos; Ulrich Hollstein 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 353 KB

## Abstract The ^13^C NMR spectra of several 2‐substituted imidazoles and benzimidazoles have been measured. The substituent was CH~3~, COOH and CONHR, where R = H, __n__‐Bu, __p__‐tolyl or __m__‐chlorophenyl. Carbons 4 and 5 in the imidazoles and the carbon pairs 8/9, 4/7 and 5/6 become equivalent

On the Tautomeric Structure of 5-hydroxy
On the Tautomeric Structure of 5-hydroxy- and 5-mercapto-1H-1,2,3-triazoles: −13C NMR analysis
✍ Gerrit L'abbé; Pieter Delbeke; Gonda van Essche; Ingrid Luyten; Karin Vercautere 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 176 KB 👁 1 views

## Dedicated to Professor G. Smets on the occasion of his 75th birthday The title compounds have been analyzed by 13C NMR spectroscopy and compared with the N-3 methyl and O/S alkyl derivatives. The mesoionic structures 2a,b are rejected in favour of la,b on the basis of the 2Jc5 = CH coupling con