𝔖 Bobbio Scriptorium
✦   LIBER   ✦

13C NMR investigation of some hetero-ring substituted 2- and 4-quinolone systems

✍ Scribed by G. M. Coppola; A. D. Kahle; M. J. Shapiro

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
379 KB
Volume
17
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A series of 2‐ and 4‐quinolones substituted in the hetero‐ring have been evaluated using ^13^C NMR techniques. Substituent effects are discussed as an aid to evaluation of potential tautomerization in the 2‐quinolone systems. The observed substituent shifts for systems having a hydroxy function at the 4‐position in the 2‐quinolones can be explained without implementing the tautomerism to a 4‐quinolone.

📜 SIMILAR VOLUMES

1H and 13C NMR spectra of 3-substituted
1H and 13C NMR spectra of 3-substituted 4-quinolones
✍ Ľubomír Zalibera; Viktor Milata; Dušan Ilavský 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 180 KB 👁 2 views

A series of 14 3-substituted 4-oxoquinolones with or without a substituent (methyl, ethyl) in position 1 were prepared. Literature and measured data were used to study the inÑuence of the substituent on the shifts of carbon atoms of these compounds, which are model compounds for antibacterial drugs

13C NMR spectra of some 4-substituted pr
13C NMR spectra of some 4-substituted protoadamantanes
✍ S. E. Morgan; D. M. Rackham 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 274 KB 👁 1 views

## Abstract The ^13^C NMR spectra of some mono‐ and geminal disubstituted protoadamantanes have been assigned with the aid of shift reagents.

1H and 13C NMR spectra of some 2-substit
1H and 13C NMR spectra of some 2-substituted 4,5-dimethylfurans
✍ Miloslava Dandárová; Daniel Végh 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 202 KB

## Abstract ^1^H and ^13^C NMR spectra of 22 2‐substituted 4,5‐dimethylfurans are reported. The __J__(C, H) values were used for signal assignments and for the identification of geometrical isomers of some derivatives.

Proton NMR investigation of some substit
Proton NMR investigation of some substituted 1,3-thiazolidin-4-ones
✍ Christopher Richard Joseph Woolston; John Barry Lee; Frederick John Swinbourne; 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 345 KB

## Abstract The ^1^H NMR spectra of a series of 2,3‐diaryl‐1,3‐thiazolidin‐4‐ones were measured and the ABX systems due to the heterocyclic ring protons were formally analysed. The chemical shifts and coupling constants were examined in relation to the structures concerned. The effects of S‐oxidati

1H and 13C NMR study of some (E)-3′-and
1H and 13C NMR study of some (E)-3′-and 4′substituted stilben-4-ols
✍ Thomas H. Fisher; Tor P. Schultz 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 269 KB

## Abstract A series of ten (__E__)‐stilben‐4‐ols, HOPhCHCHPhX, with X = H, 4′‐Cl, 4′‐F, 4′‐Me, 4′;‐OMe, 3′‐Me, 3′‐OMe, 3′‐OH, 3′‐F and 3′,4‐diOMe, were studied using one‐ and two‐dimensional NMR techniques. Interpretation of these spectra led to definitive assignments of all carbon and hydrogen c