Elsevier

Tetrahedron Letters

Volume 42, Issue 12, 18 March 2001, Pages 2341-2343
Tetrahedron Letters

A novel nine-membered intramolecular hydrogen bonding in methyl naphthoate bearing phenol moiety

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Abstract

A novel nine-membered intramolecular hydrogen bonding between ester carbonyl and phenolic hydroxyl groups was investigated based on X-ray crystallography and variable-temperature 1H NMR spectroscopy. The 1H NMR studies in CDCl3 indicated that a significant downfield shift of the phenolic proton as the temperature is lowered.

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