BUTYROLACTONES AS HERBICIDES Russian patent published in 2020 - IPC C07D307/24 C07D307/33 A01N43/08 A01P13/00 

FIELD: chemistry; agriculture.

SUBSTANCE: invention relates to a compound selected from compounds of formula 1 and stereoisomers thereof. In formula 1 Q¹ is a phenyl ring substituted with 1–2 substitutes independently selected from R⁷; Q² is a phenyl ring substituted with 1–2 substituents, independently selected from R¹⁰; Y¹ is O; Y² is O; R¹ is H; R² is H; R³ is H; each of R⁴ and R⁵ independently represents H or C₁-C₄ alkyl; each of R⁷ and R¹⁰ independently represents halogen, C₁-C₄ alkyl or C₁-C₄ haloalkyl. Invention also relates to herbicidal compositions, a herbicidal mixture, a method of controlling undesirable vegetation.

EFFECT: there are prepared new compounds of formula 1, which are applicable as herbicides.

10 cl, 64 tbl, 10 ex