| 摘要 |
PCT No. PCT/EP92/00183 Sec. 371 Date Sep. 14, 1993 Sec. 102(e) Date Sep. 14, 1993 PCT Filed Jan. 29, 1992 PCT Pub. No. WO92/16514 PCT Pub. Date Oct. 1, 1992.Isoxazole- and isothiazole-5-carboxamides of the formula <IMAGE> where X is oxygen or sulfur, R1 is hydrogen, substituted or unsubstituted alkyl, cycloalkyl, cycloalkenyl, alkenyl (may be epoxidized at the double bond), alkynyl, alkoxy, a heterocyclic radical or phenyl, R2 is a derivative carboxylic acid function and R3 and R4 have the meanings given in the disclosure, and herbicidal agents containing compounds I. |
