| 摘要 |
<p>4-Fluoro-3-phenoxy-benzyl 3-alken-1-yl-2,2-dimethyl-cyclopropanecarboxylates, a process for their preparation snd their use in pest-combating agents 4-Fluorù-3-phenoxy-benzyl 3-alken-1-yl-2,2-dimethyl-cyclopropanecarboxylates have the general formula (I) wherein R represents alkyl or alkenyl, R represents hydrogen or alkyl, with the proviso that R and R1 are different, and R2 represents hydrogen, cyano or alkyl, alkenyl or alkynyl having in each case up to 4 carbon atoms, and are obtained if 3-alken-1-yl-2,2-dimethyl-cyclo-propanecarboxylic acids of the general formula (II) wherein R and R1 have the meaning given above, or reactive derivatives of these acids, are reacted with 4-fluoro-3-phenoxy-benzyl alcohols of the general formula (III), Le A 20 910 wherein R2 has the meaning given above, or with reactive derivatives of these alcohols, if appropriate in the presence of an acid acceptor and/or catalyst, and if appropriate using a diluent. The compounds of the formula (I) have a high pesticidal activity, especially against insects or acarids. Le A 20 910</p> |
