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Volume 69 
Part 6 
Page o830  
June 2013  

Received 29 April 2013
Accepted 30 April 2013
Online 4 May 2013

Key indicators
Single-crystal X-ray study
T = 180 K
Mean [sigma](C-C) = 0.004 Å
R = 0.028
wR = 0.065
Data-to-parameter ratio = 10.4
Details
Open access

(1S,3R,8R)-2,2-Dichloro-3,7,7,10-tetramethyltricyclo[6.4.0.01,3]dodec-9-en-11-one

aLaboratoire de Chimie des Substances Naturelles, "Unité Associé au CNRST (URAC16)", Faculté des Sciences Semlalia, BP 2390 Bd My Abdellah, 40000 Marrakech, Morocco, and bLaboratoire de Chimie de Coordination, 205 route de Narbonne, 31077 Toulouse Cedex 04, France
Correspondence e-mail: berraho@uca.ma

The title compound, C16H22Cl2O, was synthesized from [beta]-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from the essential oil of the Atlas cedar (Cedrus Atlantica). The molecule is built up from fused six- and seven-membered rings and an additional three-membered ring arising from the reaction of himachalene with dichlorocarbene. The six-membered ring has an envelope conformation, with the C atom belonging to the three-membered ring forming the flap, whereas the seven-membered ring displays a screw-boat conformation; the dihedral angle between the rings (all atoms) is 59.65 (14)°.

Related literature

For background to the essential oil of the Alas cedar (Cedrus atlantica), see: Joseph & Dev (1968[Joseph, T. C. & Dev, S. (1968). Tetrahedron, 24, 3841-3859.]); Plattier & Teiseire (1974[Plattier, M. & Teiseire, P. (1974). Recherche, 19, 131-144.]). For the reactivity and biological properties of [beta]-himachalene, see: Benharref et al. (2012[Benharref, A., El Ammari, L., Lassaba, E., Ourhriss, N. & Berraho, M. (2012). Acta Cryst. E68, o2502.]); Chekroun et al. (2000[Chekroun, A., Jarid, A., Benharref, A. & Boutalib, A. (2000). J. Org. Chem. 65, 4431-4434.]); El Jamili et al. (2002[El Jamili, H., Auhmani, A., Dakir, M., Lassaba, E., Benharref, A., Pierrot, M., Chiaroni, A. & Riche, C. (2002). Tetrahedron Lett. 43, 6645-6648.]); Lassaba et al. (1998[Lassaba, E., Eljamili, H., Chekroun, A., Benharref, A., Chiaroni, A., Riche, C. & Lavergne, J.-P. (1998). Synth. Commun. 28, 2641-2651.]); Dakir et al. (2004[Dakir, M., Auhmani, A., Ait Itto, M. Y., Mazoir, N., Akssira, M., Pierrot, M. & Benharref, A. (2004). Synth. Commun. 34, 2001-2008.]); Daoubi et al. (2004[Daoubi, M., Duran -Patron, R., Hmamouchi, M., Hernandez-Galan, R., Benharref, A. & Isidro, G. C. (2004). Pest Manag. Sci. 60, 927-932.]). For conformational analysis, see: Cremer & Pople (1975[Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354-1358.]).

[Scheme 1]

Experimental

Crystal data
  • C16H22Cl2O

  • Mr = 301.24

  • Monoclinic, P 21

  • a = 8.8780 (3) Å

  • b = 10.3340 (3) Å

  • c = 8.9230 (3) Å

  • [beta] = 108.805 (4)°

  • V = 774.94 (4) Å3

  • Z = 2

  • Cu K[alpha] radiation

  • [mu] = 3.67 mm-1

  • T = 180 K

  • 0.30 × 0.25 × 0.21 mm

Data collection
  • Agilent Xcalibur (Eos, Gemini ultra) diffractometer

  • Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010[Agilent (2010). CrysAlis PRO . Agilent Technologies Ltd, Yarnton, England.]) Tmin = 0.761, Tmax = 1.000

  • 2787 measured reflections

  • 1835 independent reflections

  • 1779 reflections with I > 2[sigma](I)

  • Rint = 0.027

  • [theta]max = 60.6°

Refinement
  • R[F2 > 2[sigma](F2)] = 0.028

  • wR(F2) = 0.065

  • S = 1.03

  • 1835 reflections

  • 176 parameters

  • 1 restraint

  • H-atom parameters constrained

  • [Delta][rho]max = 0.16 e Å-3

  • [Delta][rho]min = -0.17 e Å-3

  • Absolute structure: Flack & Bernardinelli (2000[Flack, H. D. & Bernardinelli, G. (2000). J. Appl. Cryst. 33, 1143-1148.]), 614 Friedel pairs

  • Flack parameter: 0.014 (15)

Data collection: CrysAlis PRO (Agilent, 2010[Agilent (2010). CrysAlis PRO . Agilent Technologies Ltd, Yarnton, England.]); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012[Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.]) and PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]); software used to prepare material for publication: WinGX (Farrugia, 2012[Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.]).


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: TK5222 ).


References

Agilent (2010). CrysAlis PRO . Agilent Technologies Ltd, Yarnton, England.
Benharref, A., El Ammari, L., Lassaba, E., Ourhriss, N. & Berraho, M. (2012). Acta Cryst. E68, o2502.  [CSD] [CrossRef] [details]
Chekroun, A., Jarid, A., Benharref, A. & Boutalib, A. (2000). J. Org. Chem. 65, 4431-4434.  [CrossRef] [PubMed] [ChemPort]
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354-1358.  [CrossRef] [ChemPort] [ISI]
Dakir, M., Auhmani, A., Ait Itto, M. Y., Mazoir, N., Akssira, M., Pierrot, M. & Benharref, A. (2004). Synth. Commun. 34, 2001-2008.  [ISI] [CrossRef] [ChemPort]
Daoubi, M., Duran -Patron, R., Hmamouchi, M., Hernandez-Galan, R., Benharref, A. & Isidro, G. C. (2004). Pest Manag. Sci. 60, 927-932.  [CrossRef] [PubMed] [ChemPort]
El Jamili, H., Auhmani, A., Dakir, M., Lassaba, E., Benharref, A., Pierrot, M., Chiaroni, A. & Riche, C. (2002). Tetrahedron Lett. 43, 6645-6648.  [ChemPort]
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.  [ISI] [CrossRef] [ChemPort] [details]
Flack, H. D. & Bernardinelli, G. (2000). J. Appl. Cryst. 33, 1143-1148.  [ISI] [CrossRef] [ChemPort] [details]
Joseph, T. C. & Dev, S. (1968). Tetrahedron, 24, 3841-3859.  [CrossRef] [ChemPort] [ISI]
Lassaba, E., Eljamili, H., Chekroun, A., Benharref, A., Chiaroni, A., Riche, C. & Lavergne, J.-P. (1998). Synth. Commun. 28, 2641-2651.  [ISI] [CrossRef] [ChemPort]
Plattier, M. & Teiseire, P. (1974). Recherche, 19, 131-144.  [ChemPort]
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [ChemPort] [details]
Spek, A. L. (2009). Acta Cryst. D65, 148-155.  [ISI] [CrossRef] [ChemPort] [details]


Acta Cryst (2013). E69, o830  [ doi:10.1107/S1600536813011781 ]

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