| abstract |
Trizolopyrimidines of formula (I) wherein R1 is hydrogen, C1-C4alkyl or C1-C4haloalkyl; and R2 is C1-C4alkyl, C1-C4haloalkyl, C1-C4alkoxy, C1-C4haloalkoxy, C1-C4alkylthio, C1-C4haloalkylthio, C1-C4alkoxy-C1-C4aklyl, C1-C4alkoxy-C1-C4alkoxy, C1-C4alkoxy-C1-C¿4alkylthio, halogen, amino, C¿1?-C4alkylamino or C1-C4dialkylamino, have pre- and postemergence herbicidal properties. The preparation of these compounds and the use thereof as herbicides are described. |