C-and N-trimethylsilylazole derivatives were studied by 1H, 13C and 29Si NMR spectroscopy. Degenerated prototropic tautomerism of 4-trimethylsilylpyrazole in methanol and the silylotropy of 1trimethylsilyl-4-methylpyrazole in a neat liquid were investigated for the Ðrst time. 3-and 5-tautomers of 3(
13C NMR study of N-acyl-S-homoserine lactone derivatives
✍ Scribed by William Lao; Staffan Kjelleberg; Naresh Kumar; Rocky deNys; Roger W. Read; Peter Steinberg
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 68 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
The complete assignments of the 13C NMR resonances of N-(alkanoyl)-and N-(3-oxoalkanoyl)-S-homoserine lactone are reported. These assignments were made by comparison with values for N-butanoyl-S-homoserine lactone, a model compound whose structure was comprehensively established by a combination of onedimensional proton and carbon spectra and two-dimensional COSY, NOESY, HSQC and HMBC experiments.
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