Intermediate in the preparation of cyclopropanecarboxylate...

C - Chemistry – Metallurgy – 07 – C

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260/492.8

C07C 69/14 (2006.01) C07C 49/185 (2006.01)

Patent

CA 1147347

ABSTRACT Novel intermediate in the manufacture of pyrethroid insecticides has the following formula:- Image in the (lR,cis)-stereoisomeric form. The intermediate can be prepared by a pro- cess comprising the reaction of (lR,cis)-1-(2-hydroxy-3-oxobutyl)-3,3-dimethyl- cyclopropane-2-carbaldehyde with an acetylating agent.

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