Intermediate in the preparation of cyclopropanecarboxylate...

C - Chemistry – Metallurgy – 07 – C

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260/567.1

C07C 49/185 (2006.01) C07C 45/60 (2006.01)

Patent

CA 1126759

ABSTRACT Novel intermediate in the manufacture of pyrethroid insecticides has the following formula Image The compound preferably has the same stereochemical form as the cycloprop- ane ring in (+)-3-carene. The novel intermediate can be prepared by a pro- cess which comprises hydrolysing a 4-acetyl-2-alkoxy-7,7-dimethyl-3-oxa- bicyclo[4.1.0]heptane. The starting material is preferably derived from (+)-3-carene.

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