| 摘要 |
Disclosed are compounds such as 3-[5-(1,1-dimethylethyl)-3-isoxazolyl]-1-methyl-4-hydroxy-2-imidazolid inone; their control of weeds such as johnsongrass; the process of making them; and intermediates for making them, the compounds being represented by a Formula I: <IMAGE> (I) wherein A is <IMAGE> where R is an alkyl of up to six carbon atoms; an alkenyl of up to five carbon atoms; an alkynyl of up to five carbon atoms; a cycloalkyl selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl; a haloalkyl of up to six carbon atoms; -R4-O-R5, or -R4-S-R5, where R4 is an alkylene of up to six carbon atoms and R5 is an alkyl of up to six carbon atoms; <IMAGE> where Z is nitro (NO2), chloro (Cl), bromo (Br), fluoro (F), or R5, and n is 0, 1, 2, or 3; R1 is an alkyl of up to three carbon atoms, or allyl; R2 is hydroxy (OH), chloro (Cl) or bromo (Br); and R3 is hydrogen (H), an alkyl of up to four carbon atoms, allyl, or hydroxy (OH). |
