ACYLATED AMINOPHENYLSULFONYL UREAS OF SALTS THEREOF INTERMEDIATE PHENYLSULFONYLS, HERBICIDAL AGENT AND METHOD OF CONTROLLING WEEDS Russian patent published in 2001 - IPC

FIELD: agriculture, more particularly controlling weeds. SUBSTANCE: acylated aminophenylsulfonyl ureas have formula I: R¹ and R² which have herbicidal activity and selective effect as compared with well known compounds of this series. Acylated aminophenylsulfonyl ureas formula I wherein Z is CH or N, X and Y are halogen, alkyl having 1-6 carbon atoms, alkoxy having 1-6 carbon atoms or mono- or dialkylamino having 11-14 carbon atoms in each alkyl moiety; R³ is hydrogen or alkyl having 1 or 2 carbon atoms, or together with nitrogen atom to which they are attached form heteryclic ring with 3-8 ring atoms; -COR⁵ is R⁵ wherein -NH-R⁶ is hydrogen, alkoxy having 1-4 carbon atoms, alkyl having 1-6 carbon atoms which are substituted by 1-3 halogen atoms in alkyl moiety, cycloalkyl having 3-8 carbon atoms, mono-or dialkylamino having 1-4 carbon atoms in each alkyl moiety, R⁶ wherein -SO₂R⁷ is pyrimidine ring unsubstituted or substituted by two alkoxy groups having 1-4 carbon atoms, or R⁷ wherein R⁵ is as defined R⁴, except for alkoxy having 1-4 carbon atoms; R¹ and R² is hydrogen and alkyl having 1-4 carbon atoms. Also described are intermediate phenylsulfonyl derivatives of formula wherein R⁸ are as defined in claims 1-4, if R⁹ is NH-tert-butyl, then NHR¹⁰ is nitro, amino or R¹⁰ wherein COR¹¹ is R¹¹ wherein R⁸ is hydrogen and alkyl having 1-6 carbon atoms, or R⁹ is amino, and -NHR¹⁰ is R¹⁰ wherein is as defined above. Said compounds are intermediate products for preparing acylated aminophenylsulfonyl ureas of general formula I as defined in claims 1-4. Also describe is herbidal agent comprising compounds of general formula I or salt thereof in effective amount and desired additives, and also method of controlling weeds by treatment thereof or plants, seeds thereof or with compounds of formula I or salt thereof in effective amount. EFFECT: improved properties of the title compounds. 8 cl, 18 ex