SUBSTITUTED 3- (PYRIDYLCARBONYL-AZA, -OXA- AND THIACYCLOHEX-5-EN-2,4-DIONE, YOUR BENZO (B) - OR 5,6-DIHYDRO DERIVATIVES, PRODUCTION AND USE THEREOF AS HERBICIDE

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.