Acta Cryst. (2013). E69, o1777-o1778 [ doi:10.1107/S1600536813030936 ]
Abstract: The title compound, C16H24Br2O was synthesized by three steps from -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).
CCDC reference: 971358
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