Acta Cryst. (2007). E63, o3372  [ doi:10.1107/S1600536807031376 ]

rac-N-(6a-Butyl-6-chloro-2-oxoperhydrofuro[3,2-b]furan-3-yl)-2,2,2-trifluoroacetamide

J. Erdsack, M. Schürmann, H. Preut and N. Krause

Abstract: The title compound, C₁₂H₁₅ClF₃NO₄, is a side product in a synthesis of novel furanomycin derivatives. The stereochemistry at the bicyclic core is consistent with a halolactonization step. However, racemization also occurred via an unknown mechanism. The five-membered rings are nearly perpendicular to each other [torsion angle at the common bond: -95.6 (2)°].

Online 5 July 2007

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