3-OXO-3-(ARYLAMINO)PROPIONATES, METHOD FOR PRODUCTION THEREOF AND USE THEREOF IN PRODUCING PYRROLIDINONES Russian patent published in 2020 - IPC C07D207/27 C07C233/15 

FIELD: chemistry.

SUBSTANCE: invention relates to a compound of formula I

and salts thereof, which is suitable in chemical industry when producing herbicides, a method of producing a compound of formula I by reacting compounds of formulas II and III:

, ,

optionally in the presence of a catalyst or a base, as well as a method of producing a compound of formula IV

by reductive cyclisation of a compound of formula I in the presence of a reducing agent, where in formulas I-IV Q¹ is phenyl substituted with not more than 5 substituents R¹; Q² is phenyl substituted with not more than 5 substituents R⁴; R is C₁-C₈ alkyl; R¹ and R⁴ independently represent halogen or C₁-C₃ halogenalkyl.

EFFECT: novel compound for synthesis of herbicides, an effective method for production thereof and a method using it are disclosed.

20 cl, 2 ex, 2 tbl