| 摘要 |
The invention relates to biphenyl compounds having general formula (I) in which X is oxygen, sulphur, >NH, >NCH3, >NCHO, >NCOCH3, >NSO2CH3 or >NCOCF3; Y is oxygen, sulphur, >NH, >NCH3, >NC2H5, >NCHO, >NSO2CH3, >NCH2CN, >NCOCH3, >NCOCF3 or >NCH2Ph; R<1> is hydrogen, C1-C4 alkyl, C1-C2 alcoxy, phenyl-C1-C2 alkoxy, hydroxy-C1-C2 alkyl, C1-C2-alkoxy-C1-C2 alkyl, halo-C1-C2 alkyl, halo-C1-C4 alkoxy, C1-C2 alkylthio, C2-C3 alkenyl, hydroxycarbonyl, C1-C2 alkyloxycarbonyl, C1-C2 alkylaminocarbonyl, C1-C2 dialkylaminocarbonyl, aminocarbonyl, halogen, nitro, cyano, C1-C3 alkylamino, C1-C3 dialkylamino, acetylamino, -COR<7>, NR<8>R<9> or a heterocyclic 3-6-membered ring which can be interrupted once or more by O, S, or N; R<7> is hydrogen, C1-C3 alkyl, or halo-C1-C3 alkyl; R<8>R<9> are the same or different and are hydrogen, C1-C3 alkyl or COR<10>; R<10> is hydrogen, C1-C3 alkyl, halo-C1-C3 alkyl or phenyl, R<2> is C1-C4 alkyl, C1-C3 alkoxy, C1-C3 haloalkyl, C1-C3 haloalkoxy, halogen, C1-C3 haloalkylthio, C1-C3 alkylthio, cyano or nitro; n = 1, 2 and 3. The invention also includes herbicidal formulations of the compounds and their use as herbicides. |
