| 摘要 |
<p>The invention relates to new pyrimidine derivatives with herbicidal activity corresponding to formula I wherein X is halogen, lower alkoxy or lower alkylthio Y is hydrogen or halogen and- -R1 and - -R3 are aliphatic amino radicals, one or both of which contain the cyclopropyl ring. A process for their manufacture is given. Herbicidal compositions which contain these new pyrimidine derivatives as active component and their use for the post-emergent total or selective combating of weeds are also disclosed.</p> |
