4-AMINO-6-(4-SUBSTITUTED-PHENYL)-PICOLINATES AND 6-AMINO-2-(4-SUBSTITUTED-PHENYL)-PYRIMIDINE-4-CARBOXYLATES AND THEIR APPLICATION AS HERBICIDES

摘要

FIELD: agriculture.;SUBSTANCE: invention refers to agriculture. Compound of formula (I): ; in which X is CY; where Y is hydrogen, halogen, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, C₁-C₃-haloalkoxy, C₁-C₃-alkylthio or C₁-C₃-haloalkylthio; R¹ means OR^1', in which R^1' means H, C₁-C₈-alkyl or C₇-C₁₀-aryl alkyl; R² means a halogen selected from F, Cl or Br, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₂-C₄-alkenyl, C₂-C₄-haloalkenyl, C₂-C₄-alkynyl, C₂-C₄-haloalkynyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio, C₁-C₄-haloalkylthio, amino, C₁-C₄-alkylamino, C₂-C₄-haloalkylamino, formyl, (C₁-C₃-alkyl) carbonyl, (C₁-C₃-haloalkyl) carbonyl or cyano, provided that R² is not SCH₃; R³ and R⁴ each independently is hydrogen, C₁-C₆-alkyl, C₁-C₆-haloalkyl, C₃-C₆-alkenyl, C₃-C₆-haloalkenyl, C₃-C₆-alkynyl, hydroxy, C₁-C₆-alkoxy, C₁-C₆-haloalkoxy, formyl, (C₁-C₃-alkyl) carbonyl, (C₁-C₃-haloalkyl)carbonyl, (C₁-C₆-alkoxy) carbonyl, (C₁-C₆-alkyl) carbamyl, C₁-C₆-alkylsulfonyl, tri (C₁-C₆-alkyl) silyl or di (C₁-C₆-alkyl) phosphonyl, or R³ and R⁴ together with the nitrogen atom, to which they are attached, form a 5- or 6-membered saturated ring, or R³ and R⁴, taken together, mean = CR^3'R^4', where R^3' and R^4' each independently is hydrogen, C₁-C₆-alkyl, C₃-C₆-alkenyl, C₃-C₆-alkynyl, C₁-C₆-alkoxy or C₁-C₆-alkylamino, or R^3' and R^4' together with the carbon atom to which they are attached, form a 5- or 6-membered saturated ring; Ar is Ar2, Ar3, Ar4, Ar5 or Ar6.;EFFECT: invention provides higher efficiency of weed control.;30 cl, 13 tbl