13C NMR chemical shift assignments have been made for a series of 1-substituted carbazoles, 8-substituted 1.2,3,4-tetrahydrocarbazoles, 1 -substituted benzo[a]carbazoles and 6-substituted dibenzo-[c,g]carbazoles. Single examples were examined of other classes of substituted carbazoles: 3-butylcarbaz
13C NMR chemical shift assignments for some n-butylthiomethylene ketones
✍ Scribed by Angel Guerrero; Alfredo Parrilla; Francisco J. Sanchez
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 236 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The ^13^C NMR spectra of a series of 2‐(n‐butylthiomethylene) cycloalkanones and 2‐(n‐butylthiomethylene) 1‐decalones were recorded and unequivocally assigned by the study of correlation signals in DQCOSY and HETCOR experiments. The effect caused by the introduction of the n‐butylthiomethylene group in comparison with the corresponding parent compounds is discussed.
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## Abstract ^13^C NMR chemical shift assignments of 47 __N__‐mono‐ and __N,N__‐disubstituted 3‐aminopyrroles with hydrogen or methyl in the 5‐position are reported. Substituents in the 2‐position are electron withdrawing such as alkoxycarbonyl, cyano or acyl in most cases and those in the 4‐positio