| abstract |
3,3-dimethyl-hex-5-en-2-one derivatives of the general formula (I) in the A is hydrogen, halogen or C₁ to C₄ haloalkyl B C₁ to C₄ haloalkyl X is hydrogen or halogen and R is hydrogen, an arylsulfonyl, alkylsulfonyl or haloalkyl sulfonyl group mean, process for the preparation of the compounds (I) and their use for the preparation of pyrethroids. |