Herbicides based on 4-hydroxypyrimidine derivatives

摘要

Compounds of the formula (I) <IMAGE> in which R<1> is haloalkyl, R<2> and R<3> are hydrogen, halogen, hydroxyl, alkyl, akoxy, alkylthio, haloalkyl, cyano, cycloalkyl, alkanoyl, benzoyl, phenyl, phenoxy, a phenyl or phenoxy radical which is optionally substituted by halogen, alkyl, aklanoyl, alkoxycarbonyl, CF3, CN or nitro, or NR<4>R<5> in which R<4> and R<5> are halogen, alkyl or cycloalkyl or R<4> and R<5> are linked directly and together with the N atom represent a heterocycle which can have up to 2 additional hetero atoms O, N or S and which can also be substituted by alkyl, except the case in which R<1> is CCl3, R<2> is H and R<3> is Cl, the compounds of the formula (I) also including corresponding, agriculturally suitable salts, are suitable are herbicides against monocotyledon and dicotyledon weeds in crops of useful plants.