ACYLAMINO-SUBSTITUTED ISOXAZOLE OR ISOTHIAZOLE DERIVATIVES, THEIR PREPARATION AND THEIR USE

摘要

Acylamino-substituted isoxazole or isothiazole derivatives, their preparation and their use Acylamino-substituted isoxazole or isothiazole derivatives of the formula I <IMG> I where X is oxygen or sulfur; R1 is unsubstituted or substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or phenyl; R2 is CN, CONH2, CSNH2, SCN or haloalkyl; R3 is hydrogen or unsubstituted or substituted alkyl or cycloalkyl; R4 is alkoxy, unsubstituted or substituted alkyl, cycloalkenyl, cycloalkyl, alkenyl or alkynyl, an unsubstituted or substituted 5-membered or 6-membered heterocyclic radical or unsubstituted or substituted phenyl; haloalkyl, alkoxy, haloalkoxy, alkylthio and/or haloalkylthio, and agriculturally useful salts of the isoxazole or isothiazole derivatives I, with the exception of 3-methyl-4-thiocyanato-5-trifluoroacetylaminoisoxazole, 3-methyl-4-thiocyanato-5-benzoylaminoisoxazole, 3-methyl-4-cyano-5-fur-2-ylcarbonylaminoisoxazole, 3-ethyl-4-cyano-5-fur-2-ylcarbonylaminoisoxazole, 3-methyl-4-cyano-5-benzoylaminoisothiazole, 3-methyl-4-carboxamido-5-acetylaminoisothiazole, 3-methyl-4-carboxamido-5-(4-chlorobenzoyl)-aminoisothiazole, 3-methyl-4-carboxamido-5-(2-chlorobenzoyl)-aminoisothiazole, 3-methyl-4-carboxamido-5-benzoylaminoisothiazole, 3-phenyl-4-cyano-5-benzoylaminoisoxazole, 3-phenyl-4-cyano-5-(4-chlorobenzoyl)-aminoisoxazole, 3-phenyl-4-cyano-5-(4-methylbenzoyl)-aminoisosazole and 3-phenyl-4-cyano-5-propionylaminoisoxazole, agent containing the compounds I and their use as herbicides.