Document Type and Number:
Japanese Patent JPS6354699
Kind Code:
B2
Abstract:
3-Halogenoethyl- or propyl-2,2-dimethylcyclopropane carboxylic acid esters, which are intermediates in the preparation of synthetic pyrethroids, are prepared by the reaction of certain halogenopentenes or hexenes with a diazoacetic ester in the presence of a catalyst which is metallic copper or a copper (II) salt, a rhodium (II) salt of a carboxylic acid or a transition metal complex of certain chiral Schiff bases. By the use of the latter class of catalysts the yield of preferred cis IR isomer may be increased relative to the other possible isomers.
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Inventors:
JON KUROSUBII
DEIUITSUDO HORANDO
DEIRU ANDORYUU REIDORAA
DEIUITSUDO JON MIRUNAA
DEIUITSUDO HORANDO
DEIRU ANDORYUU REIDORAA
DEIUITSUDO JON MIRUNAA
Application Number:
JP9406080A
Publication Date:
October 28, 1988
Filing Date:
July 11, 1980
Export Citation:
Assignee:
ICI PLC
International Classes:
C07C67/30; A01N53/08; B01J23/00; B01J23/72; B01J31/00; B01J31/04; B01J31/22; C07B61/00; C07C67/00; C07C67/343; C07C69/74; C07C253/00; C07C255/39; C07D213/53; C07H15/18; C07H15/26; C07H23/00