SUBSTITUTED 4-CYAN-3-(2,6-DIFLUOROPHENYL)-4-PHENYLBUTANOATES, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF AS HERBICIDES AND PLANT GROWTH REGULATORS

摘要

Compounds of the formula (I) or salts thereof,; ;in whichUSR¹ is H or a hydrolyzable radical,US(R²)_n is n substituents R²,where R² independently of the others is Hal, CN, NO₂, (C₁-C₈)-alkyl, (C₁-C₈)-alkoxy, (C₁-C₈)-alkylthio, (C₁-C₈)-alkylsulfinyl, (C₁-C₈)-alkylsulfonyl, (C₁-C₆)-haloalkyl, (C₁-C₆)-haloalkoxy, (C₁-C₆)-haloalkylthio, (C₁-C₆)-haloalkylsulfinyl, (C₁-C₆)-haloalkylsulfonyl, (C₂-C₆)-alkenyl, (C₂-C₆)-alkynyl, tri-[(C₁-C₄)-alkyl]-silyl or tri-[(C₁-C₄)-alkyl]-silyl-(C₁-C₄)-alkylor where in each case two groups R² located ortho at the ring together are —Z¹-A*-Z², in whichA* is (C₁-C₄)-alkylene, which is optionally substituted by radicals from the group consisting of halogen, (C₁-C₄)-alkyl, (C₁-C₄)-haloalkyl, (C₁-C₄)-alkoxy and (C₁-C₄)-haloalkoxy,Z¹, Z² are each a direct bond, O or S andwhere the group —Z¹-A*-Z² together with the carbon atoms, attached to the group, of the phenyl ring form a fused-on 5- or 6-membered ring, andUSn is 0, 1, 2, 3, 4 or 5,USexcluding the compound in which R¹ is methyl and (R²)_n is 3-fluoro (n=1),USare suitable for use as herbicides and plant growth regulators and can be prepared by the process of claim 8.