| 摘要 |
Herbicides are of the formula <IMAGE> wherein W is fluoro, bromo, chloro or CF3, each of X and X DEG is independently H, fluoro, chloro, bromo, C1-C4 alkyl, C1-C4 alkoxy, CF3 or nitro, Z and Z1 are independently oxygen or sulfur, with the proviso that at least one is oxygen, each of Y and Y DEG is independently H, fluoro, chloro, bromo, C1-C4 alkyl, C1-C4 alkoxy, CF3 or nitro, R1 and R4 are independently H, C1-C4 alkyl and -COOR5 wherein R5 is H or C1-C4 alkyl, R2 and R3 are independently H, C1-C5 alkyl, fluoro, chloro, bromo or hydroxy, and R and R DEG are independently H or C1-C3 alkyl or both together form a covalent bond or an epoxy bridge (-O-), with the further proviso that no two adjacent ring members in either Rings A or B are from the group of t-butyl, t-butoxy and CF3.
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