3-ARYLOXYCARBOXYLIC ACID DERIVATIVES, HERBICIDAL AGENT AND AGENT FOR CONTROLLING PLANT GROWTH Russian patent published in 1999 - IPC

FIELD: agriculture. SUBSTANCE: 3-aryloxycarboxylic acid derivatives of general formula I wherein R¹ is radical OR¹⁰ wherein R¹⁰ is hydrogen, C₁-C₄ alkyl, alkali metal cation, equivalent of alkaline-earth metal cation, ammonium cation or organic ammonium cation; R² and R³ are C₁-C₄ alkoxy group; X is CH; R⁴ is phenyl which is substituted by 1-5 halogen atoms and/or 1-3 groups selected from C₁-C₄ alkyl and C₁-C₄ alkoxy group; R⁵ is C-C alkyl or phenyl; R⁶ is phenyl which is substituted by one or more substituents selected from group consisting of halogen, hydroxy, C₁-C₄ alkyl, C₁-C₄ alkoxy group, C₁-C₄ alkylthio group or acetoxy group; Y is sulfur or oxygen; Z is oxygen, have herbicidal or bioregulating activity. Herbicidal agent and agent for controlling growth of plants based on compounds of formula I are described. EFFECT: compounds having improved selective activity and higher biological effectiveness. 8 cl, 5 ex, 7 tbl