| 摘要 |
<p>Certain N-haloacyl 4-spirocycloaliphatic oxazolidines, wherein the haloacyl group contains 2 to 4 carbon atoms, the remaining ring-carbon atom valences are satisfied by hydrogen or C1-6 alkyl groups and said spirocycloaliphatic group contains 5 to 12 carbon atoms being selected from the group consisting of cyclopentyl, cyclohexyl, cyclohexenyl, cycloheptyl, cyclooctyl and C1-6 lower alkyl derivatives thereof, are selective herbicides for crop protection.</p> |
