The methoxy group conformation of chromone derivatives was studied by 1H NMR methods. For the qualitative determination of the conformational preferences of the model compounds, proton relaxation rates, spin‐spin decoupling difference spectroscopy and 2D COSY experiments were applied. NOE data were used in the calculations of conforrmer population ratios in these six‐spin (ABCX3) systems.
ASJC Scopus subject areas
- Materials Science(all)