The temperature-dependent (1)H and (13)C NMR spectra of 2-(2-butynyl)-10-methyl-1,2,3,4-tetrahydropyrazino[1,2-a]indole (4) (as a representative example of 1-9) in CFCl(3) + CD(2)Cl(2) solution are described and discussed. Below 183 K, the hexahydropyrazine ring inversions become slow on the NMR tim
13C NMR spectra of substituted indoles
β Scribed by Gerardo Burton; Alberto A. Ghini; Eduardo G. Gros
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 359 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
The positions of the chemical shifts in the table match those of the carbon atoms at the head of a column. Assignments with similar chemical shifts may be interchanged. Fourth signal not resolved. Signals superimposed.
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## Abstract The ^13^C chemical shifts of nine __ortho__βsubstituted phenols have been determined in cyclohexane and in dimethyl sulfoxide. All data were acquired in duplicate upon c.w. and FT instrumentation and both sets of data are presented. The chemical shifts at carbons 1, 2 and 3 are correla