| abstract |
New 5-pyrazol-1-yl) benzoic acid thiol esters of the formula I below have good pre- and postemergent selective herbicidal properties and also inhibit plant growth. The esters correspond to formula I. wherein X is hydrogen, halogen or C₁-C₄ alkyl, Y is C₁-C₄ alkyl or X and Y together with the carbon atoms to which they are attached form a 5-6-membered ring which is unsubstituted or substituted by methyl, Z halogen, C₁-C₆-alkyl, C₁-C₄-alkoxy or C₁-C₄-alkylthio, R₁ is hydrogen or halogen, R₂ halogen, AQ together is hydrogen or a radical -CH (COCH₃) COOR₄, A is a C₁-C₄ alkylene bridge, and Q, R₃ and R₄ represent a residue defined in the description.n n n There are syntheses for the preparation of these esters and examples of theirnUse described. |