DERIVATIVE OF SUBSTITUTED PYRAZOLYL PYRAZOLE AND USE THEREOF AS HERBICIDE Russian patent published in 2019 - IPC C07D471/04 C07D487/04 A01N47/18 A01P13/00 

FIELD: chemistry.

SUBSTANCE: in general formula (I) R¹ is a chlorine atom or a bromine atom, R² is a cyano group or a nitro group, R³ is a hydrogen atom, a halogen atom, C₁-C₄alkyl group which can be substituted with one or more halogen atoms depending on the case, or C₁-C₄alkoxy group, a is equal to 3–4, b is equal to 1–2 and c is equal to 1–2, and each of groups R³ can be simultaneously identical when c is equal to 2.

(I).

EFFECT: invention relates to compounds of formula (I) capable of effectively controlling harmful weeds at a high leaf stage, as well as an herbicidal composition based thereon, a method of controlling undesirable plants and use thereof for controlling undesirable plants.

6 cl, 5 tbl, 1 ex