| abstract |
Novel 5-(pyrazol-1-yl)-benzoic acid-thiolesters of the formula I have good selective-herbicidal action in pre- and postemergent application. They also inhibit plant growth. The esters correspond to formula I ##STR1## wherein X is hydrogen, halogen or C 1 -C 4 alkyl n Y is C 1 -C 4 alkyl or n X and Y together with the carbon atoms, to which they are bound, form a 5- to 6-membered ring, which can be substituted by methyl, n Z is halogen, C 1 -C 6 alkyl, C 1 -C 4 alkoxy or C 1 -C 4 alkylthio n R 1 is hydrogen or halogen n R 2 is halogen n A-Q together are hydroxyl or a radical --CH(COOR 3 )COOR 4 n A is a C 1 -C 4 alkylene bridge n Q, R 3 and R 4 have the meaning given in the disclosure. n The disclosure contains methods for synthetizing these esters and examples showing their use. |