SUBSTITUTED BENZIMIDAZOLE AND INDAZOLE DERIVATIVES

摘要

A herbicidal compound of formula (I) : or N-oxide or quaternised derivative thereof; in which the dotted lines indicate the presence of two double bonds arranged so as to form a fused hetero-aromatic ring system; Ar is an optionally substituted aryl or heterocyclic ring system; W is O or NR<1> where R<1> is H or lower alkyl; A, B, D are independently selected from N, NR<2>, N-E, CR<6>, C-E or C(R<6>)E; wherein E is: provided 2 of A, B and D are N, NR<2> or N-E and at least one of A, B or D carries a group E; where R<2> is H, OR<7>, CN, COOR<8>, alkyl or haloalkyl; R<3> and R<4> are independently selected from H, optionally substituted alkyl, alkenyl or alkynyl, halogen, NR<9>R<1><0>, or R<3> and R<4> together with the carbon to which they are attached form an optionally substituted alkenyl or cycloalkyl group; R<5> is CO2R<1><1>, CN, COR<1><1>, CH2OR<1><1>, CH(OH)R<1><1>, CH(OR<1><1>)R<1><2>, CSNH2, COSR<1><1>, CSOR<1><1>, CONHSO2R<1><1>, CONR<1><3>R<1><4>, CONHNR<1><3>R<1><4>, CONHN<+>R<1><3>R<1><4>R<1><5> Y<->, CO2<->M<+> or COON=CR<1><3>R<1><4>; X is (CH2)n, CH=CH, CH(OR<1><6>)CH2 or COCH2; where n is O, 1 or 2; M<+> is an agriculturally acceptable cation; Y<-> is an agriculturally acceptable anion; R<6> is H, halogen, OR<7>, CN, COOR<8>, alkyl or haloalkyl; R<7> and R<8> are independently H or lower alkyl; R<1><1>, R<1><2> and R<1><6> are independently selected from H or an optionally substituted alkyl, alkenyl, alkynyl or aryl group; and R<9>, R<1><0>, R<1><3>, R<1><4> and R<1><5> are independently selected from H or an optionally substituted alkyl, alkenyl, alkynyl or aryl group or any two of R<9>, R<1><0>, R<1><3>, R<1><4> and R<1><5> together with the atom to which they are attached form a cycloalkyl or heterocyclic ring providing that the compound is other than 5-(2,4-dichlorophenoxy)indazol-1-ylacetic acid or its methyl ester. Process for the preparation of these compounds and compositions containing them are also described.