| 摘要 |
The herbicidal diphenyl ethers are of the general formula I <IMAGE> wherein: A is halogen, cyano or nitro; X is hydrogen or halogen; Y hydrogen, halogen, cyano, trifluoromethyl, or C1-4 alkyl; Z is oxygen or sulfur; R is C1-3 alkylidene or monosubstituted C1-3 alkylidene, wherein the substituent is selected from C1-4 alkyl, C1-4 oxyalkyl or C1-4 hydroxyalkyl; and R<1> is hydrogen, alkyl or C1-10 alkoxy, C3-8 cycloalkyl, an agronomically acceptable ionic species, phenyl, or mono-, di-, or trisubstituted phenyl wherein the substituent(s) is (are) selected from halogen, C1-10 alkyl or C1-10 alkoxy, cyano, nitro, or trifluoromethyl, or an optical or stereo isomer thereof. |
