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Infrared and nuclear magnetic resonance absorption and isomerism of 3-aminocrotonic esters. Part III

AuthorsGómez Sánchez, A.; Bellanato, Juana
Issue Date1975
PublisherRoyal Society of Chemistry (UK)
CitationJournal of the Chemical Society, Perkin Transactions 2: 1561-1566 (1975)
AbstractThe i.r. and 1H n.m.r. spectra of 3-(dialkylamino)crotonates indicate that these substances exist as the isomer with the (E)-configuration; the i.r. spectra also show the presence of minute amounts of the sterically more hindered (Z)-form. The low temperature 1H n.m.r. spectra reveal the existence of barriers to rotation around the C-N which amount to ca. 11-14 kcal mol-1. Some complexities in the i.r. spectra suggest in addition the existence of smaller energy barriers to rotation around the C-CO2R single bond.
Identifiersdoi: 10.1039/P29750001561
issn: 1472-779X
Appears in Collections:(IG) Artículos
(CFMAC-IO) Artículos
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