Acta Cryst. (2003). E59, o1265-o1266  [ doi:10.1107/S1600536803016945 ]

4-(3,4-Methylenedioxyphenyl)-7,7-dimethyl-5-oxo-3,4,5,6,7,8-hexahydrocoumarin

H. Wu, D. Shi, J. Chen, X. Wang, Q. Zhuang and H. Hu

Abstract: The title compound, C₁₈H₁₈O₅, was synthesized by the reaction of 3,4-methylenedioxybenzaldehyde, 5,5-dimethyl-1,3-cyclohexanedione and isopropylidene malonate in the presence of triethylbenzylammonium chloride in water. X-ray analysis reveals that the pyran ring and the fused six-membered ring adopt distorted boat conformations.

Online 8 August 2003

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