Conformational state of β-hydroxynaphthylamides: Barriers for the rotation of the amide group around CN bond and dynamics of the morpholine ring
作者:Tomasz Kozlecki、Peter M. Tolstoy、Agnieszka Kwocz、Mikhail A. Vovk、Andrzej Kochel、Izabela Polowczyk、Peter Yu. Tretyakov、Aleksander Filarowski
DOI:10.1016/j.saa.2015.04.052
日期:2015.10
analyzed by NMR, X-ray and DFT calculations. In aprotic solution the molecules contain intramolecular OHO hydrogen bonds, which change into intermolecular ones in solid state. The energy barriers for the amide group rotation around the CN bond were estimated from the lineshapeanalysis of (1)H and (13)C NMRsignals. A tentative correlation between the barrier height and the strength of OHO bond was proposed