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Document Type and Number:
Japanese Patent JPH0134979
Kind Code:
B2
Abstract:
A novel process for the resolution of D,L-cis and D,L-trans 2,2-dimethyl-3-(2,2 -dihalovinyl)-cyclopropane-1-carboxylic acids of the formula I wherein X is selected from the group consisting of fluorine, chlorine and bromine comprising salifying the said acid with an optically active base selected from the group consisting of D-ephedrine, L-ephedrine, D-N-methyl-ephedrine, L-N-methylephedrine, D-pseudo-ephedrine and L-pseudo-ephedrine to form the corresponding salt, recovering the said salt and subjecting the latter to acid hydrolysis to obtain the corresponding resolved acid which are intermediates for the synthesis of esters having a remarkable insecticidal activity.

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Inventors:
JAN JORI
JUZETSUPE JIRIOTSUTEI
SHARURU PABAN
JATSUKU BYURIDON
Application Number:
JP4125080A
Publication Date:
July 21, 1989
Filing Date:
April 01, 1980
Export Citation:
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Assignee:
ROUSSEL UCLAF
International Classes:
C07B57/00; C07C51/487; C07C61/40; C07C67/00; C07C213/00; C07C215/40



 
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