Acta Cryst. (2006). E62, o3636-o3638  [ doi:10.1107/S1600536806029175 ]

(1,12)-Ethyl 15-ethoxy-4-hydroxy-2-oxo-9-oxatetracyclo[10.2.2.0^1,10.0^3,8]hexadeca-4,6,8,13-tetraene-13-carboxylate

J. Heredia-Moya, K. Krohn, U. Flörke and R. Araya-Maturana

Abstract: (E)-Ethyl 3-(4-oxo-4H-chromen-3-yl)acrylate reacts in a Domino reaction with ethyl vinyl ether via intermediates to give the title bridged compound, C₂₀H₂₂O₆, and by-products. The conformation of the carboxylate group in the molecular structure is determined by intramolecular hydrogen bonds. In the crystal structure, molecules are linked via intermolecular C-HO hydrogen bonds.

Online 2 August 2006

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