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Hashim, Nur Athirah and Ahmad, Farediah and Basar, Norazah and Awang, Khalijah (2011) (E)-3-[3,4-Bis(methoxymethoxy)phenyl]-1-(7-hydroxy-5-methoxy-2,2-dimethylchroman-8-yl)prop-2-en-1-one. Acta Crystallographica Section E-Structure Reports Online, 67 (9). O2300-U2326. ISSN 1600-5368

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Official URL: http://dx.doi.org/10.1107/S160053681103131X


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-HO hydrogen bond with the carbonyl O atom of the propenone unit, generating an S(5) ring.

Item Type:Article
Uncontrolled Keywords:5,6-(2,2-dimethyl­chroman­yl)-2-hy­droxy-4-meth­oxy­acetophenone, 3,4-bis­(meth­oxy­meth­yloxy)benzaldehyde
Subjects:Q Science
ID Code:28574
Deposited By: Yanti Mohd Shah
Deposited On:22 Oct 2012 18:20
Last Modified:30 Sep 2019 22:02

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