SUBSTITUTED PYRAZOLYL PYRAZOLE DERIVATIVE AND USE OF SAME AS HERBICIDE Russian patent published in 2018 - IPC C07D471/04 C07D487/04 A01N43/56 A01P13/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a pyrazolyl pyrazole derivative of formula (I), wherein R¹ is a halogen atom, R² is a cyano group or nitro group, R³ represents a hydrogen atom, trifluoroacetyl group, pentafluoropropionyl group, R⁴-R⁶ may be the same or different and represent hydrogen atoms, halogen atoms, C₁-C₆alkyl groups, a is 3-4 and b is 0–2, excluding compounds in which R¹ is a chlorine atom, R² is a cyano group, R³-R⁶ are hydrogen atoms and b is equal to 1. (I).

EFFECT: claimed compound is able to effectively combat harmful weeds at the higher stages of leaf development that cause practical problems.

8 cl, 4 tbl, 6 ex