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. 2011 Sep 1;67(Pt 9):o2301.
doi: 10.1107/S1600536811031321. Epub 2011 Aug 11.

(E)-3-(2H-1,3-Benzodioxol-5-yl)-1-(7-hy-droxy-5-meth-oxy-2,2-dimethyl-chroman-8-yl)prop-2-en-1-one

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

(E)-3-(2H-1,3-Benzodioxol-5-yl)-1-(7-hy-droxy-5-meth-oxy-2,2-dimethyl-chroman-8-yl)prop-2-en-1-one

Farediah Ahmad et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The reaction of 5,6-(2,2-dimethyl-chromane)-2-hy-droxy-4-meth-oxy-acetophenone and 3,4-methlene-dioxy-benzaldehyde affords the title chalcone derivative, C(22)H(22)O(6). The two benzene rings are connected through a -C(=O)-CH=CH- (propenone) unit, which is in an E conformation; the ring with the hy-droxy substitutent is aligned at 6.2 (1)° with respect to this unit, whereas the ring with the methyl-enedi-oxy substituent is aligned at 8.2 (1)°. The dihdral angle between the rings is 14.32 (7)°. The hy-droxy group engages in an intra-molecular hydrogen bond with the carbonyl O atom of the propenone unit, generating an S(5) ring.

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Figures

Fig. 1.
Fig. 1.
The molecular structure of (I) at the 70% probability level; hydrogen atoms are drawn as spheres of arbitrary radius.
See this image and copyright information in PMC

References

    1. Barbour, L. J. (2001). J. Supramol. Chem. 1, 189–191.
    1. Bruker (2009). APEX2 and SAINT Bruker AXS Inc., Madison, Wisconsin, USA.
    1. Hashim, N. A., Ahmad, F., Basar, N., Awang, K. & Ng, S. W. (2011). Acta Cryst E67, o2300. - PMC - PubMed
    1. Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. - PubMed
    1. Westrip, S. P. (2010). J. Appl. Cryst. 43, 920–925.