Herbicidally active 3-phenyl-5-trifluoromethylisoxazoline-5-carboxamides of cyclopentylcarboxylic acids and esters

A 3-phenyl-5-trifluoromethylisoxazoline-5-carboxamide of formula (I)

• or an agrochemically acceptable salt thereof, wherein
• R1 represents hydrogen,
• or
• represents (C1-C6)-alkyl, (C3-C6)-cycloalkyl, (C2-C4)-alkenyl or (C2-C4)-alkynyl, each of which is substituted by m radicals from the group consisting of fluorine, chlorine, bromine, cyano and (C1-C2)-alkoxy;
• X1 and X3 independently of one another represent hydrogen, halogen, hydroxy, cyano, nitro, S(O)nR2 or CO2R3,
• or
• represent (C1-C6)-alkyl, (C1-C6)-alkoxy, (C3-C5)-cycloalkyl, (C2-C6)-alkenyl or (C2-C6)-alkynyl, each of which is substituted by m radicals from the group consisting of halogen and cyano, where X1 and X3 do not simultaneously represent hydrogen;
• X2 represents hydrogen, halogen, cyano, nitro, S(O)n R2 or CO2R3,
• or
• represents (C1-C6)-alkyl, (C1-C6)-alkoxy, (C3-C5)-cycloalkyl, (C2-C6)-alkenyl or (C2-C6)-alkynyl, each of which is substituted by m radicals from the group consisting of halogen and cyano;
• R2 represents (C1-C6)-alkyl or (C3-C6)-cycloalkyl, each of which is substituted by m radicals from the group consisting of halogen and cyano;
• R3 represents hydrogen,
• or
• represents (C1-C6)-alkyl, (C3-C6)-cycloalkyl, (C2-C4)-alkenyl or (C2-C4)-alkynyl, each of which is substituted by m radicals from the group consisting of fluorine, chlorine, bromine, cyano and (C1-C2)-alkoxy;
• m represents the running number 0, 1, 2, 3, 4 or 5;
• and
• n represents the running number 0, 1 or 2.