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Principal component analysis of the 13C NMR spectra of enamino ketones

✍ Scribed by Marcel Azzaro; Serge Geribaldi; Bruno Videau; Maurice Chastrette

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
513 KB
Volume
22
Category
Article
ISSN
0749-1581

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✦ Synopsis

The -C NMR spectra of eleven 3-N,N-dialkylamino-5,5-dimethylcyelohex-2-en-l-ones have been determined. The chemical shifts of the three spa carbons and of the two methylene carbons on the cydohexenone moiety have been subjected to factor analysis. Two factors are necessary and snfficient to account for more than 93% of the total variance. The more important axis (79%) corresponds to a factor closely related to the inductive and steric effects of the akyl nitrogen substituents. The second parameter is more difl6cult to interpret and could correspond to the 'ips0 effeets' of amino groups.

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