Investigation of the structure and 13C NMR spectrum of 5-phenylbarbituric acid
β Scribed by Patrice De Meester; Shirley S. C. Chu; Misa V. Jovanovic; Edward R. Biehl
- Book ID
- 112128147
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1986
- Tongue
- English
- Weight
- 317 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0022-152X
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Carbon-13 NMR data of [iilmetacyclophane (la), its 8,ll-dihalosubstituted derivatives lb-ld and of some model compounds are reported and discussed. A remarkable downfield shift is observed for the aromatic carbon between the bridging carbons; this is tentatively ascribed to long-range effects of the
## Abstract The assignment of lines in the ^13^C NMR spectrum of abietic acid and its methyl ester have been made using carbon __T__~1~ values and lanthanide induced shift effects. StructureβNMR parameter values are briefly discussed.