title: 2,2-Dichloro-3,7,7,11-tetra-methyl-10-aza-tetra-cyclo-[6.5.0.0(1,3).0(9,11)]trideca-ne.
abstract: The title compound, C16H25Cl2N, was synthesized from β-himachalene (3,5,5,9-tetra-methyl-2,4a,5,6,7,8-hexa-hydro-1H-benzocyclo-heptene), which was isolated from the essential oil of the Atlas cedar (Cedrus Atlantica). The mol-ecule is built up from fused six- and seven-membered rings linked to two three-membered rings. The six-membered ring shows a half-chair conformation, whereas the seven-membered ring displays a boat conformation. The dihedral angle between the mean planes through the six- and seven-membered rings is 59.8 (2)°. The two three-membered rings lie to one side and each is nearly perpendicular to the six-membered ring, forming dihedral angles of 83.2 (2) and 86.0 (2)°. The absolute structure was established unambiguously from anomalous dispersion effects. No specific inter-molecular inter-actions are noted in the crystal structure.
authors: Laboratoire de Chimie Biomoléculaire, Substances Naturelles et, Réactivité "Unité Associée au CNRST (URAC16)", Université Cadi Ayyad, Faculté des Sciences Semlalia, BP 2390, Bd My Abdellah, 40000 Marrakech, Morocco.
authors: Abdelouahd
authors: A
authors: Oukhrib
authors: Ahmed
authors: A
authors: Benharref
authors: Mohamed
authors: M
authors: Saadi
authors: Moha
authors: M
authors: Berraho
authors: Lahcen
authors: L
authors: El Ammari
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