17O n.m.r. spectroscopy: intramolecular hydrogen bonding in 2′-amino-, 2′-acetamido-, and 2′-trifluoroacetamidoacetophenone
- 1 January 1989
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 12,p. 767-768
- https://doi.org/10.1039/c39890000767
Abstract
17 O N.m.r. data for intramolecular hydrogen bonded 2′-amino and amido substituted acetophenones are factored into electronic, torsion angle, and hydrogen bonding components which show that the most acidic proton donor yields the largest shielding effect:MM2 calculations predict consistent hydrogen bonding distances of 1.97 Å but variation in torsion angles.Keywords
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