The 13C NMR spectra of thiazolopyridine systems are discussed. One-bond and long-range 13C-1H coupling constants were determined from line splittings and a simple method for distinguishing between 2-methylthiazoloand 3-methylisothiazolopyridines is suggested.
Carbon-13 NMR studies on azolopyridines. 3—the isothiazolopyridine systems
✍ Scribed by Stefano Chimichi; Barbara Cosimelli; Piero Tedeschi; Fabio Ponticelli
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 324 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
All four fully aromatic isothiazolopyridine isomers have been synthesized, their ^13^C spectra have been assigned and all one‐bond and long‐range ^13^C^1^H coupling constants have been determined.
📜 SIMILAR VOLUMES
The =C NMR spectra of oxazolopyridine systems are discussed, and a simple method for distinguishing between 2-methyloxazolo- and3-metbylisoxazolo-pyridines is suggested, b e d on the & m i d shift of the methyl group. The effect of the 2-methyloxazole fusion on the pyridine ring is comparable to tha
## Abstract Carbon‐13 NMR spectra of solid polycrystalline bicyclo[3.3.1]nonan‐9‐one and adamantanone have been measured at 315K. The relatively narrow ^13^C linewidths observed for these solids, together with measured spin‐lattice relaxation times, indicate that both these solids are orientational
## Abstract The paramagnetic contribution to the ^13^C and ^1^H nuclear relaxation rates in the ethanol‐Mn(II) system has been calculated. Both __T__~1~ and __T__~2~ experiments have been performed by means of Fourier transform and partially relaxed Fourier transform NMR spectroscopy. The correlati
## Abstract ^13^C chemical shift assignment of several methyl substituted heterocyclic naphtho‐ and anthraquinones, including dihydronaphthofuranquinones, azaanthraquinones, benzopyrroloquinolinediones and benzothiophenoquinolinediones, are described. A deshielding effect due to a methyl group was