Stereochemistry of two new polyfunctionalized gem-dihalocyclopropanes.
The two new gem-dihalogenocyclopropanes (1'S,3R)-3-(2',2'-dichloro-1'-methylcyclopropyl)-6-oxoheptanoic acid, C(11)H(16)Cl(2)O(3), (2), and (1'S,3R)-3-(2',2'-dibromo-1'-methylcyclopropyl)-6-oxoheptanoic acid, C(11)H(16)Br(2)O(3), (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.
Ziyat
Hossni
H
Département de Chimie, Faculté des Siences-Semlalia, BP 2390 Marrakech, Morocco.
Ait Itto
My Youssef
MY
Ait Ali
Mustapha
M
Karim
Abdellah
A
Riahi
Abdelkhalek
A
Daran
Jean-Claude
JC
D018360:Crystallography, X-Ray; D003521:Cyclopropanes / Q000138:chemical synthesis / Q000737:chemistry*; D006538:Heptanoic Acids / Q000138:chemical synthesis / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D008968:Molecular Conformation; D011722:Pyrethrins / Q000138:chemical synthesis / Q000737:chemistry*
C454608:3-(2',2'-dibromo-1-methylcyclopropyl)-6-oxoheptanoic acid; C454607:3-(2',2'-dichloro-1'-methylcyclopropyl)-6-oxoheptanoic acid; D003521:Cyclopropanes; D006538:Heptanoic Acids; D011722:Pyrethrins