## Abstract The ^1^H and ^13^C NMR spectra of 14 methyl‐substituted acetophenones and 14 methyl‐substituted methyl benzoates were assigned and interpreted with respect to the conformation of the C~ar~—C(O) bond. The substituent effects are proportional in the two series and can be divided into pola
13C nuclear magnetic resonance data for methyl 3,4-disubstituted benzoates
✍ Scribed by R. S. Varma; Amita Shukla
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 134 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The ^13^C NMR spectral assignments and ^1^J(C,H) spin–spin coupling constants for methyl 4‐anilino‐3‐nitrobenzoate, methyl 4‐p‐chloroanilino‐3‐nitrobenzoate, methyl 4‐p‐toluidino‐3‐nitrobenzoate, methyl 4‐p‐ anisidino‐3‐nitrobenzoate, methyl 4‐hydroxy‐ 3‐methoxybenzoate and methyl 3,4‐dimethoxybenzoate are reported.
📜 SIMILAR VOLUMES
substituted 4-methylcoumarins (4-methyl-2H-1 -benzopyran-2-ones) have been recorded. The effects of an alkyl side-chain at C-3 on the chemical shift values and that of a methoxy or an acetoxy group
## Abstract __J__(^13^C^1^H) coupling constants for some methyl‐ and aminopyrimidines have been determined by ^13^C NMR. Both the one‐bond and long‐bond and long‐range coupling constants follow general trends which can be summarized in a few simple rules. In particular, the ^3^__J__(C‐i,H) coupling
## Abstract A recently introduced tracer, [3,4‐^13^C~2~]glucose, was compared to the widely used tracer, [6,6‐^2^H~2~]glucose, for measurement of whole‐body glucose turnover. The rate of glucose production (GP) was measured in rats after primed infusions of [3,4‐^13^C~2~]glucose, [6,6‐^2^H~2~]gluco
1H and 13C NMR data for a series of 3-O-, 4-O-and 3,4-di-O-glycosylated methyl a-L-rhamnopyranosides are presented. The glycosylation e †ects on the spectra of disaccharides and the deviation from additivity values in the spectra of trisaccharides were determined.
## Abstract The ^13^C chemical shifts for 1,3‐dithiane and 9 methyl substituted derivatives are reported. Only three of the methyl‐1,3‐dithianes were conformationally anancomeric and hence the conformational equilibria must be taken into account when deriving the values of the different substituent