Acta Cryst. (2006). E62, o1724-o1726  [ doi:10.1107/S1600536806011755 ]

Dimethyl 3t,4t-dicarboxytetrahydrofuran-2r,5c-dicarboxylate

C. Villiers, P. Thuéry and M. Ephritikhine

Abstract: Esterification of tetrahydrofuran-2r,3t,4t,5c-tetracarboxylic acid gave selectively the title compound, C₁₀H₁₂O₉, in which the two more acidic carboxylic acid groups, in positions 2 and 5, have been esterified. The five-membered ring is in a twist conformation. Hydrogen bonding results in double chains, or ribbons, running along the c axis.

Online 5 April 2006

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