Acta Cryst. (2001). E57, o37-o38 [ doi:10.1107/S1600536800018821 ]
Abstract: The title compound, C20H18O3, was prepared in a one-step synthesis by intramolecular cyclization following the sigmatropic rearrangement of the allyl aryl ether intermediate. The room-temperature crystal structure determination reveals a cis conformation of the ring annellation.
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