rac-(Z)-Ethyl 2-bromo-2-[(3R,5R)-3-bromo-5-methyltetrahydrofuran-2-ylidene]acetate

Acta Crystallogr C. 2006 Nov;62(Pt 11):o636-8. doi: 10.1107/S0108270106037127. Epub 2006 Oct 14.

Abstract

In the title compound, C9H12Br2O3, a (tetrahydrofuran-2-ylidene)acetate, the double bond has the Z form. In the tetrahydrofuran group, the relative configuration of the Br atom in the 3-position and the methyl group in the 5-position is anti. The compound crystallizes with two independent molecules per asymmetric unit and, in the crystal structure, the individual molecules are linked to their symmetry-equivalent molecules by C-H...O hydrogen bonds, so forming centrosymmetric hydrogen-bonded dimers.