Derives de 3-(benzazol-4-yle)dione de pyrimidine herbicides

L'invention concerne des derives 3-(benzazol-4-yle)dione de pyrimidine de la formule (I) et leurs sels. Dans cette formule, X = O, S; R1 = H, NH?2?, alkyle C1-C6, halogenure d'alkyle C1-C6; R?2? = H, halogene, alkyle C?1?-C6, halogenure d'alkyle, alkylthio C1-C6, alkylsulfinyle C1-C6, alkylsulfonyle C1-C6; R?3? = H, halogene, alkyle C?1?-C6; R?4? = H, halogene; R5 = CN, halogene, alkyle C?1?-C6, halogenure d'alkyle C1-C6, alcoxy C1-C6, halogenure d'alcoxy C1-C6; =Y- = un groupe =N-N(R?6?)-, =C(ZR7)-N(R6)-, =C(ZR7)-O-, =C(ZR?7)-S-; R6? = alkyle C?1?-C6, halogenure d'alkyle C1-C4, cycloalkyle C3-C6, alkenyle C3-C6, alkinyle C3-C6, alkyle C1-C6-SO2, alkyle C1-C6-CO, halogenure d'alkyle C1-C6-CO, alkyle C1-C6-CS, alcoxy C1-C6-CO, alcoxy C1-C6-CS ou alkyle C1-C6 eventuellement substitue; Z = liaison chimique, O, S, -S(O)-, -SO2-, -NH-, -N(R?8)-; R7, R8? = alkyle C?1?-C6, halogenure d'alkyle C1-C6, hydroxy-alkyle C1-C4, cyano-alkyle C1-C4, alcoxy C1-C4-alkyle C1-C4, halogenure d'alcoxy C1-C4-alkyle C1-C4, alkenyloxy C3-C4-alkyle C1-C4, alkinyloxy C3-C4-alkyle C1-C4, cycloalkoxy C3-C8-alkyle C1-C4, amino-alkyle C1-C4, alkylamino C1-C4-alkyle C1-C4, di(alkyle C1-C4)amino-alkyle C1-C4, alkylthio C1-C4-alkyle C1-C4, halogenure d'alkylthio C1-C4, alkenylthio C3-C4-alkyle C1-C4, alkinylthio C3-C4-alkyle C1-C4, alkylsulfinyle C1-C4-alkyle C1-C4, halogenure d'alkylsulfinyle C1-C4-alkyle C1-C4-alkenylsulfinyle C3-C4-alkyle C1-C4, alkinylsulfinyle C3-C4-alkyle C1-C4, alkylsulfonyle C1-C4-alkyle C1-C4, halogenure d'alkylsulfonyle C1-C4-alkyle C1-C4, alkenylsulfonyle C3-C4-alkyle C1-C4, alkinylsulfonyle C3-C4-alkyle C1-C4, alkenyle C3-C6, cyano-alkenyle C3-C6, halogenure d'alkenyle C3-C6, alkinyle C3-C6, cyano-alkinyle C3-C6, halogenure d'alkinyle C3-C6, HO-CO-alkyle C1-C4, (alcoxy C1-C4)CO-alkyle C1-C4, (alkyle C1-C4)CS-alkyle C1-C4, H2N-CO-alkyle C1-C4, alkyle C1-C4-NHCO-alkyle C1-C4, di(alkyle C1-C4)NCO-alkyle C1-C4, di(alkyle C1-C4)phosphonyle-alkyle C1-C4, cycloalkyle C3-C8 eventuellement substitue, cycloalkyle C3-C8-alkyle C1-C4, phenyle, phenyle-alkyle C1-C4, heterocyclyle ayant entre 3 et 7 chainons ou heterocyclyle-alkyle C1-C4, chaque compose heterocyclyle pouvant contenir un chainon cyclique CS, ou si Z = liaison chimique, R?7? designe egalement H, OH, CN, SH, NH?2?, halogene, -CH(OH)-CH2-R?9?, -CH(halogene)-R9, R9 = COOH, (alcoxy C?1?-C4)carbonyle, (alkylthio C1-C4)carbonyle, CONH2, alkyle C1-C4-NHCO ou di(alkyle C1-C4)NCO, ou R?7 + R8? = chaine de 1,3-propylene-tetramethylene, de pentamethylene ou d'oxyethylene d'ethylene, eventuellement substituee.