| 摘要 |
<p>A herbicidal compound of formula (I): <CHEM> wherein X is O, S(O)n or NR<a> where R<a> is H or alkyl and n is O, 1 or 2; R<1> is H or halo; R<2> is N or CR<3> where R<3> is halo or NO2; R<4> is H, halo, NO2, alkyl, haloalkyl, CN, CO2alkyl, cycloalkyl, phenyl, COalkyl, COphenyl, CHO,OH, NH2, NHCOalkyl or alkoxy R<5> is H, halo or optionally substituted alkyl; R<6> is H, halo or optionally substituted alkyl; provided that at least one of R<5> and R<6> is halo; R<7> is CN, CHO, COOR<8>, CONR<8>R<9>, where R<8> is H, optionally substituted alkyl, alkenyl, alkynyl or aryl and R<9> is a group R<8>, SO2alkyl, NR<1><0>R<1><1> or N<+>R<1><0>R<1><1>R<1><2> Z<-> where Z is an agriculturally acceptable anion e.g. chloride and R<1><0>, R<1><1> and R<1><2> are independently selected from hydrogen and alkyl. Processes for the preparation of these compounds and compositions containing them are also described.</p> |
