| 摘要 |
<p>Novel carboxylic acid esters of the formula <IMAGE> I where R1, R2 and R3 are identical or different and each is hydrogen, halogen or alkyl or alkenyl of up to 5 carbon atoms, Y is 3-(2,2-dihalogenovinyl)-2,2-dimethyl-cyclopropyl or a radical of the formula <IMAGE> where R4 is unbranched or branched alkyl, alkenyl or alkynyl of up to 4 carbon atoms or is an alicyclic radical of 3 to 7 carbon atoms, R5 is halogen, alkyl or alkoxy of up to 5 carbon atoms, trihalomethyl, cyano or nitro and a is from 0 to 3 and Z is a radical of the formula <IMAGE> +TR <IMAGE> where X is oxygen, sulfur or -CH2-, R6, R7 and R8 are halogen or alkyl, alkoxy or haloalkyl of up to 5 carbon atoms and b, c and d are from 0 to 3, their preparation and their use in insect and arachnid control.</p> |
