| 摘要 |
Compounds of the formula: <IMAGE> wherein X is hydrogen, halo, trihalomethyl, alkyl, nitro or cyano; X1 is hydrogen, halo, or trihalomethyl; R1 and R2 are hydrogen, alkyl, phenyl or benzyl; n is 1 to 5, and Z is nitro, and compositions containing these compounds exhibit herbicidal activity.
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