Compounds of formula wherein Q is O or absent; L 1 is linear C 2 -C 4 alkanediyl, which is optionally substituted with one or more groups independently selected from halogen, C 1 -C 4 alkyl and C 3 -C 6 cycloalkyl, wherein two C 1 -C 4 -alkyl substituents may form a ring together with the carbon atom to which they are bonded; or is a moiety (CH 2) n -X-(CH 2) m wherein n and m are independently 0, 1 or 2 and X is C 3 -C 7 -cycloalkanediyl, which is optionally substituted with C 1 -C 4 alkyl; or L 1 is absent; with the proviso that in the case of L 1 being absent, Q is also absent; L 2 is C=O or absent, L 3 is linear C 1 -C 4 alkanediyl, which is optionally substituted with one or more groups independently selected from C 1 -C 4 alkyl, C 3 -C 6 cycloalkyl and halogen, wherein two C 1 -C 4 -alkyl substituents may form a ring together with the carbon atom to which they are bonded; or is a group (CH 2) n -(CH=CH)-CH 2) m, which is optionally substituted with up to 2 groups independently selected from C 1 -C 4 alkyl, C 3 -C 5 cycloalkyl and halogen, wherein n and m are independently 0, 1 or 2; or is C 3 -C 7 -cycloalkanediyl, which is optionally substituted with one or more groups independently selected from C 1 -C 4 -alkyl and halogen; Y is selected from T 1 wherein R 1, R 2 and R 3 are each independently selected from hydrogen, halogen, cyano, nitro, linear or branched C 1 -C 6 -alkyl, C 3 -C 6 -cycloalkyl, C 1 -C 6 -alkoxy, linear or branched halogen-substituted C 1 -C 6 -alkyl, halogen-substituted C 1 -C 6 -alkoxy, halogen substituted C 3 -C 6 -cycloalkyl, C 1 -C 6 -alkylsulphanyl, C 1 -C 6 -alkylsulphinyl, C 1 -C 6 -alkylsulphonyl, N- C 1 -C 6 -alkylamino, N, N -di-C 1 -C 6 -alkylamino, N-C 1 -C 3 -alkoxy-C 1 -C 4 -alkylamino and 1-pyrrolidinyl or T 2 wherein Z 1 and Z 2 are each independently selected from hydrogen, halogen, cyano, nitro, linear or branched C 1 -C 6 -alkyl, C 3 -C 6 -cycloalkyl, C 1 -C 6 -alkoxy, C 1 -C 6 -alkylcarbonyl, halogen-substituted linear or branched C 1 -C 6 -alkyl, halogen-substituted C 1 -C 6 -alkoxy, halogen substituted C 3 -C 6 -cycloalkyl, C 1 -C 6 -alkylsulphanyl, C 1 -C 6 -alkylsulphinyl, C 1 -C 6 -alkylsulphonyl, N- C 1 - C 6 - alkylamino, N,N- di - C 1 - C 6 - alkylamino, N- C 1 - C 3 - alkoxy - C 1 - C 4 -alkylamino and 1-pyrrolidinyl; and Z 3 represents hydrogen or linear C 1 -C 6 -alkyl, C 3 -C 6 -cycloalkyl, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, aryl or hetaryl, which may independently of one another be substituted with 1 to 5 substituents selected from hydroxy, halogen, cyano, nitro, amino, C 1 -C 3 -alkyl, C 1 -C 3 -alkoxy, hydroxycarbonyl, alkoxycarbonyl, alkylcarbamoyl, cycloalkylcarbamoyl and phenyl and the salts thereof Q is O or absent; L 1 is linear C 2 -C 4 alkanediyl, which is optionally substituted with one or more groups independently selected from halogen, C 1 -C 4 alkyl and C 3 -C 6 cycloalkyl, wherein two C 1 -C 4 -alkyl substituents may form a ring together with the carbon atom to which they are bonded; or is a moiety (CH 2) n -X-(CH 2) m wherein n and m are independently 0, 1 or 2 and X is C 3 -C 7 -cycloalkanediyl, which is optionally substituted with C 1 -C 4 alkyl; or L 1 is absent; with the proviso that in the case of L 1 being absent, Q is also absent; L 2 is C=O or absent, L 3 is linear C 1 -C 4 alkanediyl, which is optionally substituted with one or more groups independently selected from C 1 -C 4 alkyl, C 3 -C 6 cycloalkyl and halogen, wherein two C 1 -C 4 -alkyl substituents may form a ring together with the carbon atom to which they are bonded; or is a group (CH 2) n -(CH=CH)-CH 2) m, which is optionally substituted with up to 2 groups independently selected from C 1 -C 4 alkyl, C 3 -C 5 cycloalkyl and halogen, wherein n and m are independently 0, 1 or 2; or is C 3 -C 7 -cycloalkanediyl, which is optionally substituted with one or more groups independently selected from C 1 -C 4 -alkyl and halogen; Y is selected from T 1 R 1, R 2 and R 3 are each independently selected from hydrogen, halogen, cyano, nitro, linear or branched C 1 -C 6 -alkyl, C 3 -C 6 -cycloalkyl, C 1 -C 6 -alkoxy, linear or branched halogen-substituted C 1 -C 6 -alkyl, halogen-substituted C 1 -C 6 -alkoxy, halogen substituted C 3 -C 6 -cycloalkyl, C 1 -C 6 -alkylsulphanyl, C 1 -C 6 -alkylsulphinyl, C 1 -C 6 -alkylsulphonyl, N- C 1 -C 6 -alkylamino, N, N -di-C 1 -C 6 -alkylamino, N-C 1 -C 3 -alkoxy-C 1 -C 4 -alkylamino and 1-pyrrolidinyl Z 1 and Z 2 are each independently selected from hydrogen, halogen, cyano, nitro, linear or branched C 1 -C 6 -alkyl, C 3 -C 6 -cycloalkyl, C 1 -C 6 -alkoxy, C 1 -C 6 -alkylcarbonyl, halogen-substituted linear or branched C 1 -C 6 -alkyl, halogen-substituted C 1 -C 6 -alkoxy, halogen substituted C 3 -C 6 -cycloalkyl, C 1 -C 6 -alkylsulphanyl, C 1 -C 6 -alkylsulphinyl, C 1 -C 6 -alkylsulphonyl, N- C 1 - C 6 - alkylamino, N,N- di - C 1 - C 6 - alkylamino, N- C 1 - C 3 - alkoxy - C 1 - C 4 -alkylamino and 1-pyrrolidinyl; and Z 3 represents hydrogen or linear C 1 -C 6 -alkyl, C 3 -C 6 -cycloalkyl, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, aryl or hetaryl, which may independently of one another be substituted with 1 to 5 substituents selected from hydroxy, halogen, cyano, nitro, amino, C 1 -C 3 -alkyl, C 1 -C 3 -alkoxy, hydroxycarbonyl, alkoxycarbonyl, alkylcarbamoyl, cycloalkylcarbamoyl and phenyl