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N,N-Disubstituted α-Amino-α,β-unsaturated Aldehydes and their Derivatives: 1H and 13C NMR Study

✍ Scribed by Alexander Yu. Rulev; Alexander S. Mokov; Leonid B. Krivdin; Natalia A. Keiko; Mikhail G. Voronkov

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
212 KB
Volume
35
Category
Article
ISSN
0749-1581

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✦ Synopsis

1H and 13C NMR spectra of N,N-disubstituted a-amino-a,b-unsaturated aldehydes and their azomethines and enammonium salts were studied. The spectra reÑect the degree of p-p conjugation between the nitrogen lone pair and the p-electrons of the carbon-carbon double bond. In this respect, the title 2-aminoenals are shown to be in an intermediate position between a-unsubstituted aminoalkenes and a,b-unsaturated aldehydes. The degree of conjugation depends on the nature of the amine moiety and the activating group.

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