| abstract |
The invention concerns novel microbicidal agents based on, in part known, dibromo-thiophene-carboxylkic acid derivatives of formula (I), in which R stands for the groupings -XR<1>, -NR<2>R<3>, -NR<4>OR<5> or -NR<4>-N(R<5>)2, wherein X stands for oxygen or sulphur, and R<1>, R<2>, R<3>, R<4> and R<5> have the meanings given in the description. The invention further concerns the use of these substances for combatting undesired micro-organisms. The invention also concerns novel dibromo-thiophene-carboxylic acid derivatives of formula (I-A), in which R<9> stands for the groupings -SR<1>, -OR<10>, (i), (ii), or (iii), wherein R<1>, R<4>, R<5>, R<10>, R<11>, R<12> and R<13> have the meanings given in the description, and a method of preparing the substances of formula (I-A). |