Thiophenecarboxylic esters, their preparation, and their use as pesticides

摘要

Thiophenecarboxylic esters of the general formula Ia or Ib <IMAGE> in which n, R<1>, R<2> and R<3> have the following meanings: n: denotes the number 0 or 1, R<1>, R<2> and R<3> in each case independently of one another denote identical or different radicals selected from the group comprising H, F, Cl, Br, NO2, CN, branched or unbranched C1-C4-alkyl or alkenyl, each of which can optionally be substituted by halogen, or denote C1-C4-alkoxy or C1-C4-alkenyloxy, each of which can optionally be substituted by halogen, or denote phenyl which is optionally substituted by halogen, alkyl or alkoxy.