| 摘要 |
A class of amides disclosed to be useful as selective pre-emergent and post-emergent herbicides are those having the general structural formula <IMAGE> in which R1 is hydrogen or methyl, R2 is ethyl, isopropyl, cyclopropyl, tert.butyl, methylamino, dimethylamino, ethylamino or methoxymethylamino, R3 is phenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 4-methylphenyl or 4-methoxyphenyl, R4 is hydrogen or C1 to C3 lower alkyl, and R5 is hydrogen or methyl, with the further stipulation that either, but not both R4 and R5 may be hydrogen.
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