| 摘要 |
<p>Compounds of the formula wherein X1 is halo or trihalomethyl, X2 is hydrogen or halo, R1 is nitro or -OR3, R2 is hydrogen or -OR4, R3 is ? CO2R, R4 is or , and R is hydroxy, alkoxy, alkenoxy, alkynoxy, thiol, alkythio, alkenylthio, amino, mono- or di-substituted amino or OM, wherein M is a monovalent cation; R' and R" are hydrogen, alkyl, alkenyl, alkynyl or phenyl; and Y is oxygen or sulfur, have herbicidal activity.</p> |
