6-(POLYSUBSTITUTED ARYL)-4-AMINOPICOLINATES AND USE THEREOF AS HERBICIDES Russian patent published in 2011 - IPC C07D213/79 C07C25/13 C07C39/26 C07C39/27 C07C39/28 C07C47/55 C07C47/575 C07C49/80 C07F5/02 C07F7/22 A01N43/40 A01P13/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a compound of formula used as herbicides, in which Q₁ is H or F; Q₂ is a halogen provided that when Q₁ is H, Q₂ is Cl or Br; R₁ and R₂ independently denote H, C₁-C₆-acyl; and Ar is a polysubstituted aryl group selected from a group consisting of

a) , b) , c) in which W₁ is a halogen; X₁ is C₁-C₄-alkyl, C₁-C₄-alkoxy, C₁-C₄-halogenalkyl, -NR₃R₄; Y₁ is C₁-C₄-alkyl, C₁-C₄-halogenalkyl, halogen or -CN, or when X₁ and Y₁ are taken together denotes -O(CH₂)_nO-, in which n=1; and R₃ and R₄ independently denote H or C₁-C₄-alkyl; W₂ is F or Cl; X₂ is F, CI, -CN, C₁-C₄-alkyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio, C₁-C₄-alkylthionyl, C₁-C₄-alkylsulphonyl, C₁-C₄-halogenalkyl, C₁-C₄-halogenalkoxy, C₁-C₄-alkoxy-substituted C₁-C₄-alkyl, C₁-C₄-alkoxy-substituted C₁-C₄-alkoxy, -NR₃R₄ or fluorinated acetyl; Y₂ is a halogen, C₁-C₄-alkyl, C₁-C₄-halogenalkyl or -CN, or when W₂ is F, X_z and Y₂, taken together, denote -O(CH₂)_nO-, in which n=1; and R₃ and R₄ independently denote H or C₁-C₆-alkyl; Y₃ is a halogen or -CN; Z₃ is F, CI, -NO₂, C₁-C₄-alkoxy, -NR₃R₄; and R₃ and R₄ independently denote H; derivatives on the carboxyl group which are suitable for use in agriculture.

EFFECT: compounds are excellent herbicides with a wide range action against weeds and excellent selectivity towards agricultural crops.

19 cl, 7 tbl, 69 ex