engleski

4-/Hydroxy(phenyl)methylene/-5-oxo-3-phenyl-2- cyclohexenecarboxylic Acid

In the title compound, C20H16O4, the cyclohexene ring adopts a twisted-boat conformation. The molecule contains an enol sub-unit and the hydroxyl group forms an intramolecular hydrogen bond to the cyclic carbonyl group, with an O...O distance of 2.485 (3) A and an O-H... O angle of 148 (3)o. Enantiomeric pairs of molecules form centrosymmetric dimers by mutual hydrogen bonding of carboxyl groups, with O...O distances of 2.649 (3) A.

cyclohexene ketoacide ; synthesis ; X-ray structure analysis

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