| 摘要 |
Novel 3-amino-1-cyanophenyl-uracils of the formulain whichR1 represents hydrogen or represents in each case optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkylalkyl, aryl, arylalkyl, heterocyclyl or heterocyclylalkyl,R2 represents hydrogen, cyano or halogen,R3 represents hydrogen, halogen or optionally substituted alkyl,R4 represents optionally substituted alkyl,a process for their preparation and their use as herbicides.
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