| 摘要 |
Heterocyclic aza-, oxa- or thia-5-cyclohexene-2,4-dione compounds and benzo [b] fused or 5,6-dihydro derivatives thereof, which compounds are substituted in the 3-position by an ortho substituted pyridoyl group and may bear further substituents in the 5- and 6- positions where the heteroring is monocyclic, and in the 1-position where the heteroatom is nitrogen, the process of preparing such compounds, their use in combatting weeds and herbicidal compositions comprising them. |
