Litwinienko G, Megiel E, Wojnicz M. Hydrogen bonding between phenols and fatty acid esters: (1)H NMR study and ab initio calculations.
Org Lett 2002;
4:2425-8. [PMID:
12098263 DOI:
10.1021/ol0261837]
[Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structure: see text] (1)H NMR measurements and ab initio calculations were used to study the interactions between hindered/nonhindered phenols and carboxylic acid esters. The dihedral angle (phi) between the OH group and a plane of the aromatic ring is close to 0 degrees in the hydrogen-bonded nonhindered phenols, whereas for 2,6-di-tert-butyl-4-methylphenol the OH group is completely twisted out of the aromatic plane (phi approximately 90 degrees ).
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