ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
13C nuclear magnetic resonance spectra were collected for a series of 5- and 6-monoaromatic ring-substituted benzonorbornadienes and 5-, 6-, 7-, and 8-monosubstituted benzonorbornen-2-ones. 13C chemical shifts values were found to be useful in the differentiation of the four monosubstituted aromatic ring isomers of benzonorbornen-2-one (1). We found that the 13C NMR spectrum of a substituted benzonorbornen-2-one (A) could be predicted with good accuracy (R2 for each aromatic carbon ≥ 0.925) from a knowledge of the 13C NMR spectrum of 1 and the appropriately substituted benzene. The substituents studied were NO2, NH2, I, CF3, CN, OCH3, and H. Correlation analysis showed that the carbonyl in A was effectively insulated from the ring π-system.
Additional Material:
4 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/omr.1270211003
