## Abstract Eight alkylcyclopropane derivatives were prepared in a conventional manner and analysed by ^13^C NMR spectroscopy. Additivity parameters were calculated from the chemical shifts of the endocyclic carbons, and the configurational structures derived for these compounds are confirmed by th
Configurational equilibria and 13C NMR spectra of tetracyclic saturated hydrocarbons
β Scribed by M. Farina; G. Di Silvestro; E. Mantica; D. Botta; G.L. Triveri
- Book ID
- 103404275
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- French
- Weight
- 482 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0040-4020
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π SIMILAR VOLUMES
## Abstract A comparative study of the ^13^C spectra of 13 1βpyrazolines is reported. The results show that the chemical shifts of some carbons are very sensitive to the relative positions of substituents on the 3,4 and 4,5 bonds.
The 13C NMR spectra of l-phenylpyrazolo[4,3-e]pyrrolo[l,2-a]pyrazine, its 5aza analogue and heterocycles with additional azolo ring annelations are reported.
## Abstract ^13^C NMR (CMR) spectra of a number of diβ and trisubstituted ethylenes have been measured. Very consistent values are found for the differential shieldings of allylic carbons in a number of linear, (Z)β and (E)βdisubstituted ethylenes. The discrepancies between the several structural e