| abstract |
Compounds represented by general formula ÄIÜ <CHEM> or salts thereof, wherein R<1> represents C1-6 alkyl; R<2> represents halogeno, C1-6 alkylsulfonyl, etc.; R<3> and R<4> each represents C1-6 alkyl or C1-6 haloalkyl; and R represents hydrogen or C1-6 alkyl. Compositions containing the compounds represented by formula ÄIÜ are useful as herbicides having selectivity corn and wheat. |