| 摘要 |
1,2,4-Oxadiazole derivs. of formula (I), useful as herbicides, are prepd.. In (I), R1 is dichlorophenoxymethyl, benzyl, ethyl, alkylamino-carbonyl, amido, methoxycarobnyl, amino, alkylureido, ethoxy carbonylalkoxy, diethylthiocarbamoylmethyl, allylaminocarbonyl opt. substd. by 1 or 2 haloen, or phenyl; R2 is dichlorophenoxymethyl, hydroxy, chloro, diethylthiocarbamoylmethyl, ethoxycarbonyl alkoxylphenoxy, dichlorophenoxy, nitrophenoxy, ethoxycarbonyl, amido or diethylphosphonyl.
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