MN NMR shielding data for some 3-methoxy-1,2,4-triazoles and related triazolones are reported. Assignments are given with the assistance of some INDOlS parameterized SOS Shielding calculations. From the ' ' N NMR shielding results it is possible to give a quantitative account of some potential prot
An investigation of the tautomeric equilibria of some 3-hydroxyindazole derivatives by 15N NMR spectroscopy
✍ Scribed by W. Schilf; L. Stefaniak; M. Witanowski; G. A. Webb
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- English
- Weight
- 257 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
where R is the gas constant and F the Faraday constant. The origin of the factor of 114 is the equation (b),
Comparison of the "C and "N NMR spectra of 8-azatheophylline with those of its three methylated derivatives and other model compounds from the literature showed that 8-azatheophylline exists to the extent of 80% in the N-2 tautomeric form in DMSO solution.
## Abstract The ^13^C, ^15^N and ^77^Se NMR data (chemical shifts and coupling constants) of some cycloakeno‐1,2,3‐selenadiazoles are presented. Extremely large ^77^Se chemical shifts are found. ^15^N, ^77^Se coupling constants, obtained at natural abundance, are reported for the first time. Strong
## Abstract Long‐range CH correlation and long‐range selective proton decoupling (LRSPD), together with other standard NMR techniques, led to the complete ^13^C and ^1^H NMR spectral assignments of 2‐acetyl‐1‐tetralone and demonstrated its existence in the __endo__‐enolic form.