## Abstract ^13^C n.m.r. studies of a series of tricarbocyclic ring C aromatic diterpenoids using protonโnoise and singleโfrequency offโresonance decoupling, partially relaxed Fourier transform techniques, shift reagents and specifically labelled derivatives have permitted unequivocal assignments o
Carbon-13 Nuclear Magnetic Resonance Spectra of Some Aromatic Amines and Imines
โ Scribed by Nash, Charles P.; Maciel, Gary E.
- Book ID
- 120399782
- Publisher
- American Chemical Society
- Year
- 1964
- Tongue
- English
- Weight
- 509 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0022-3654
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๐ SIMILAR VOLUMES
REFERENCE DATA causes the electron density to be comparatively lower at C-3 and C-5 than at C-2 and C-4, so that the former signals resonate at lower fields. Distinction between the signals of the C-2/C-4 and C-3/C-5 pairs was achieved by comparing the C-H coupling patterns of 5 and 1. Compounds 1,
## Abstract Fourier transform carbonโ13 nuclear magnetic resonance spectra have been obtained and interpreted for some 2โsubstituted tetrahydropyrans. The effects of the substituents on ฮฑ, ฮฒ, ฮณ and ฮดโcarbon atoms are discussed. Using suitable reference compounds the ฮณโparameter can be used for quan