Q. Song, F. Fronczek, N. Fischer
Nov 1, 2001
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Journal
Acta Crystallographica Section E: Crystallographic Communications
Abstract
In the title compound, (2S,3R,3aR)-2-(1,3-benzodioxol-5-yl)-3,3a-dihydro-3a-methoxy-3-methyl-5-(2-propenyl)-6(2H)-benzofuranone, C20H20O5, the furan ring has a half-chair conformation with its O atom on the twist axis. The semiquinone ring is slightly non-planar, with a maximum deviation of 0.065 (3) A.