ISSN:
0749-1581
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 13C NMR shielding effects of the carbonyl-BF3 interaction for a series of methyl- and methoxy-tetralones were determined. Once the conformations of the complexes have been defined, the major shift data which can be related to charge density changes can be qualitatively discussed in terms of the transmission of the electronic properties of the C=O:BF3 group. Complexation mainly causes a reorganization of the conjugated π-system via a resonance mechanism. Delocalization of the π-electrons towards the BF3 electron-withdrawing group increases the carbonyl reactivity of the base, while complex stability is favoured.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260240402
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