𝔖 Bobbio Scriptorium
✦   LIBER   ✦

1H and 13C NMR study of tautomerism in azoles—I : Proton transfer in the absence of solvation

✍ Scribed by A.N. Nesmeyanov; E.B. Zavelovich; V.N. Babin; N.S. Kochetkova; E.I. Fedin

Publisher
Elsevier Science
Year
1975
Tongue
French
Weight
176 KB
Volume
31
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

The tautomerism of Omeprazole in solutio
The tautomerism of Omeprazole in solution: a 1H and 13C NMR study
✍ Rosa M. Claramunt; Concepción López; Ibon Alkorta; José Elguero; Rong Yang; Stev 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 90 KB 👁 2 views

## Abstract The tautomerism of 5(6)‐methoxy‐2‐{[(4‐methoxy‐3,5‐dimethyl‐2‐pyridinyl)methyl] sulfinyl}‐1__H__‐benzimidazole (omeprazole) was determined in solution, __K__~__T__~ = 0.59 in THF at 195 K, in favor of the 6‐methoxy tautomer. The assignment of the signals was made by comparison with its

13C and 1H NMR studies of structure and
13C and 1H NMR studies of structure and tautomerism in some perimidines
✍ P. D. Woodgate; J. M. Herbert; W. A. Denny 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 604 KB

The 13C NMR spectra of some 1and 2-substituted perimidines and perimidinium salts are discussed and assigned. Although the spectra of most of the 2-substituted perimidines are comparatively simple, several examples display I3C and 'H spectral characteristics indicative of inhibition of prototropic t

Studies of tautomerism and protonation i
Studies of tautomerism and protonation in 2-aryl-1H-imidazo[1,2-a]imidazole derivatives using 1H and 13C NMR
✍ Maili Liu; R. Duncan Farrant; Robert C. Glen; John C. Lindon; Paul Barraclough; 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 459 KB

## Abstract The tautomerism and protonation of the putative inotropic 2‐(2′,4′‐dimethoxy)phenyl‐1__H__‐imidazo[1,2‐__a__]imidazole (2) has been studied in several solvents by comparing its ^1^H and ^13^C chemical shifts with those of its 1‐ and 7‐methyl derivatives 3 and 4, respectively, and acid s

1H and 13C NMR studies of the proton tra
1H and 13C NMR studies of the proton transfer in complexes of substituted phenols with trimethylamine N-oxide
✍ Bogumil Brycki; Bogumil Brzezinski; Georg Zundel; Thomas Keil 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 309 KB

## Abstract Substituted phenol–trimethylamine __N__‐oxide (TMAO) systems were studied. The ^1^H chemical shift of the hydrogen‐bonded proton first increases with decreasing p__K__~a~ of the phenols and, after a sharp maximum, it then decreases. Thus, the shielding of the hydrogen‐bonded proton by t