Acta Crystallographica Section C

Crystal Structure Communications

Volume 58, Part 2 (February 2002)

Acta Cryst. (2002). C58, o90-o93 [doi:10.1107/S0108270101019680]

Stereochemistry of two new polyfunctionalized gem-dihalocyclopropanes

H. Ziyat, M. Y. Ait Itto, M. Ait Ali, A. Karim, A. Riahi and J.-C. Daran

Abstract: The two new gem-dihalogenocyclopropanes (1'S,3R)-3-(2',2'-dichloro-1'-methylcyclopropyl)-6-oxoheptanoic acid, C₁₁H₁₆Cl₂O₃, (2), and (1'S,3R)-3-(2',2'-dibromo-1'-methylcyclopropyl)-6-oxoheptanoic acid, C₁₁H₁₆Br₂O₃, (3), are isostructural. Both present two stereogenic centers at C1' and C3. The absolute configuration was determined by X-ray methods. The cyclopropyl rings are unsymmetrical, the shortest bond being distal with respect to the alkyl-substituted C atom.

Formula: C₁₁H₁₆Cl₂O₃ and C₁₁H₁₆Br₂O₃

Online 23 January 2002


	Structure factor file (CIF format) (116.4 kbytes) Contains datablock 2

	Structure factor file (CIF format) (114.4 kbytes) Contains datablock 3

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