Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 12 (December 2013)


organic compounds



bt6944 scheme

Acta Cryst. (2013). E69, o1777-o1778    [ doi:10.1107/S1600536813030936 ]

(1S,3R,8R,10R)-2,2-Di­bromo-3,7,7,10-tetra­methyl­tri­cyclo­[6.4.0.01,3]dodecan-9-one

A. Benharref, N. Mazoir, J.-C. Daran and M. Berraho

Abstract: The title compound, C16H24Br2O was synthesized by three steps from [beta]-himachalene (3,5,5,9-tetra­methyl-2,4a,5,6,7,8-hexa­hydro-1H-benzo­cyclo­heptene), which was isolated from essential oil of the Atlas cedar (Cedrus atlantica). The mol­ecule is built up from a seven-membered ring to which a six- and a three-membered ring are fused. The six-membered ring shows a chair conformation. One C atom in the seven-membered ring and two methyl groups attached to the ring are disordered over two sets of sites, with an occupancy ratio of 0.658 (7):0.342 (7).


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