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1 H NMR analysis of the methoxy group conformation in methoxychromones
Author(s) -
Kövér Katalim E.,
Borbély J.
Publication year - 1985
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260230208
Subject(s) - chemistry , chromone , nuclear magnetic resonance spectroscopy , relaxation (psychology) , spectroscopy , group (periodic table) , proton , population , chemical solution , decoupling (probability) , nuclear overhauser effect , proton nmr , carbon 13 nmr satellite , stereochemistry , crystallography , nuclear magnetic resonance , computational chemistry , fluorine 19 nmr , organic chemistry , nuclear physics , psychology , social psychology , physics , demography , quantum mechanics , control engineering , sociology , engineering
The methoxy group conformation of chromone derivatives was studied by 1 H 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 (ABCX 3 ) systems.