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By Nur Athirah Hashim, Farediah Ahmad, Norazah Basar, Khalijah Awang and Seik Weng Ng


The reaction of 5,6-(2,2-dimethylchromanyl)-2-hydroxy-4-methoxyacetophenone and 3,4-bis(methoxymethyloxy)benzaldehyde affords the intense orange title chalcone derivative, C25H30O8. The two benzene rings are connected through a —C(=O)—CH=CH— (propenone) unit, which is in an E conformation; the ring with the hydroxy substitutent is aligned at 19.5 (2)° with respect to this unit, whereas the ring with the methoxymethyloxy substituent is aligned at 9.3 (3)°. The dihedral angle between the rings is 19.38 (10)°. The hydroxy group engages in an intramolecular O—H...O hydrogen bond with the carbonyl O atom of the propenone unit, generating an S(5) ring

Topics: Chemistry, QD1-999, Science, Q, DOAJ:Chemistry (General), DOAJ:Chemistry
Publisher: International Union of Crystallography
Year: 2011
DOI identifier: 10.1107/S160053681103131X
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