Herbicidal compounds of formula (I):
x is 0-2;
R is C₁-C₃ primary alkyl;
R¹ is phenyl; phenyl mono-substituted with bromo, chloro, fluoro, C₁-C₃ alkyl, trifluoromethyl, trifluoromethoxy, or C₁-C₃ alkoxy; or phenyl disubstituted at the 2,4-, 2,6-, or 3,4-positions with bromo, chloro, or fluoro;
R² is hydrogen or chloro;
provided that
x is 0 and R is methyl when R¹ is alkylphenyl or trifluoromethylphenyl; and
R is methyl when R¹ is disubstituted phenyl
are particularly useful in rice culture.
式(I)的除草化合物:x为0-2;R为C₁-C₃一级烷基;R¹为苯基;苯单取代为
溴、
氯、
氟、C₁-C₃烷基、三
氟甲基、三
氟甲氧基或C₁-C₃烷氧基;或苯二取代于2,4-、2,6-或3,4-位的
溴、
氯或
氟;R²为氢或
氯;但当R¹为烷基苯基或三
氟甲基苯基时,x为0且R为甲基;当R¹为二取代苯基时,R为甲基,这些化合物在
水稻栽培中特别有用。