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DOI: 10.1039/A702801F (Paper) Reference Section for: J. Chem. Res. (S), 1997, 414-415

Chromone Studies. Part 9.1 Dynamic NMR Analysis of Rotational Isomerism in 2-(N,N-Dialkylamino)chromones

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Perry T.Kaye Kaye and Isaiah D. I. Ramaite

Abstract

Dynamic 1H NMR spectroscopy has been used to explore the influence of substituents on the internal rotation of the amino group in a series of twelve 2-(N,N-dialkylamino)chromones; the rotational barriers (ΔG‡) in CDCl3 and CD2Cl2 were found to range from 38 to 52 kJ mol-1.

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