A compound of formula wherein Y is O, C=O, or CR12R13; A is a 5- or 6-membered heteroaromatic ring containing 1 to 3 heteroatoms, each independently selected from oxygen, nitrogen and sulphur, or a phenyl ring; the heteroaromatic ring or the phenyl being optionally substituted by one or more R6; R6 is, independently of each other, halogen, cyano, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-haloalkylthio, C1-C4-alkoxy-C1-4-alkyl or C1-C4-haloalkoxy-C1-C4-alkyl; R1, R2, R3, R4, R12 and R13, independently of each other, are hydrogen, halogen, cyano, C1-C4-alkyl, C1-C4-alkoxy or C1-C4-haloalkyl, R5 is hydrogen, methoxy or hydroxyl, B is phenyl substituted by one or more R8, R8 is, independently of each other, halogen, cyano or a group -L-R9, where each L is independently of each other a bond, -O-, -OC -, -NR7-, -NR7CO-, -NR7S n-, -S n-, - S nNR7-, -COO- or CONR7-, n is 0, 1 or 2, R7 is hydrogen, C1-C4-alkyl, C1-C4-haloalkyl, benzyl or phenyl, where benzyl and phenyl is unsubstituted or substituted with halogen, cyano, C1-C4-alkyl or C1-C4-haloalkyl, R9 is, independently of each other, C1-C6-alkyl, which is unsubstituted or substituted by one or more R10, C3-C6-cycloalkyl, which is unsubstituted or substituted by one or more R10, C6-C14-bicycloalkyl, which is unsubstituted or substituted by one or more R10, C2-C6-alkenyl, which is unsubstituted or substituted by one or more R10, C2-C6-alkynyl, which is unsubstituted or substituted by one or more R10, phenyl, which is unsubstituted or substituted by R10, or heteroaryl, which is unsubstituted or substituted by one or more R10, R10 is, independently of each other, halogen, cyano, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylthio, C1-C4-haloalkylthio, C3-C6-alkenyloxy, or C3-C6-alkynyloxy; or a salt or N-oxide thereof; wherein B and A-CO-NR5 are cis to each other on the four-membered ring, or a tautomer or stereoisomer of these compounds. Y is O, C=O, or CR12R13; A is a 5- or 6-membered heteroaromatic ring containing 1 to 3 heteroatoms, each independently selected from oxygen, nitrogen and sulphur, or a phenyl ring; the heteroaromatic ring or the phenyl being optionally substituted by one or more R6; R6 is, independently of each other, halogen, cyano, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-haloalkylthio, C1-C4-alkoxy-C1-4-alkyl or C1-C4-haloalkoxy-C1-C4-alkyl; R1, R2, R3, R4, R12 and R13, independently of each other, are hydrogen, halogen, cyano, C1-C4-alkyl, C1-C4-alkoxy or C1-C4-haloalkyl, R5 is hydrogen, methoxy or hydroxyl, B is phenyl substituted by one or more R8, R8 is, independently of each other, halogen, cyano or a group -L-R9, where each L is independently of each other a bond, -O-, -OC -, -NR7-, -NR7CO-, -NR7S n-, -S n-, - S nNR7-, -COO- or CONR7-, n is 0, 1 or 2, R7 is hydrogen, C1-C4-alkyl, C1-C4-haloalkyl, benzyl or phenyl, where benzyl and phenyl is unsubstituted or substituted with halogen, cyano, C1-C4-alkyl or C1-C4-haloalkyl, R9 is, independently of each other, C1-C6-alkyl, which is unsubstituted or substituted by one or more R10, C3-C6-cycloalkyl, which is unsubstituted or substituted by one or more R10, C6-C14-bicycloalkyl, which is unsubstituted or substituted by one or more R10, C2-C6-alkenyl, which is unsubstituted or substituted by one or more R10, C2-C6-alkynyl, which is unsubstituted or substituted by one or more R10, phenyl, which is unsubstituted or substituted by R10, or heteroaryl, which is unsubstituted or substituted by one or more R10, R10 is, independently of each other, halogen, cyano, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylthio, C1-C4-haloalkylthio, C3-C6-alkenyloxy, or C3-C6-alkynyloxy; or a salt or N-oxide thereof; wherein B and A-CO-NR5 are cis to each other on the four-membered ring,