| 摘要 |
<p>The invention concerns compounds of formula I <CHEM> wherein: X and Y are independently selected from the group consisting of hydrogen, C1 to C4 alkyl, C1 to C haloalkyl, and the group wherein X and Y together form a three or four-membered carbon bridge the bridge optionally comprising one or both of a double bond and a carbonyl group; Z is selected from the group consisting of hydrogen, halogen, C1 to C4 alkyl and C1 to C4 alkanoyl; R<1> is selected from the group consisting of: hydrogen; an acyl group; and an inorganic or organic cation; R<2> is selected from the group consisting of: C1 to C6 alkyl; C2 to C6 alkenyl; C2 to C6 haloakenyl; C2 to C6 alkynyl; and substituted C1 to C6 alkyl wherein the alkyl group is substituted with a substituent selected from the group consisting of halogen, phenyl, and substituted phenyl wherein the benzene ring is substituted with from one to three substituents selected from the group consisting of halogen, and C1 to C6 alkyl; R<3> is selected from the group consisting of: C1 to C6 alkyl; and R<4> is selected from the group consisting of: hydrogen; C1 to C6 alkyl; and (C1 to C6 alkoxy) carbonyl. The compounds are herbicides and in further embodiments the invention provides processes for the preparation of compounds of formula I, herbicidal compositions comprising the compounds of formula I and processes for severely damaging or killing unwanted plants by application of compounds of formula I.</p> |
