Abstract: The present invention relates to sulfonamide compounds of formula (I) wherein R1 is H, halogen, CN, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C7-cycloalkyl, C3-C7-cycloalkyl-C1-C4-alkyl, C1-C6-alkoxy, C2-C6-alkenyloxy, C2-C6-alkynyloxy, C1-C6-alkylthio, C2-C6-alkenylthio, C2-C6-alkynylthio, C1-C6-haloalkyl or C1-C6-haloalkoxy; R2 and R3 are H, halogen, CN, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C7-cycloalkyl, C3-C7-cycloalkyl-C1-C4-alkyl, C1-C6-alkoxy, C2-C6-alkenyloxy, C2-C6-alkynyloxy, C1-C6-alkylthio, C2-C6-alkenylthio, C2-C6-alkynylthio, C1-C6-haloalkyl or C1-C6-haloalkoxy; or R2 together with R3 form a fused 5 or 6-membered carbocycle or heterocycle; R4 is halogen, CN, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C1-C6-alkoxy, C1-C6-alkylthio, C1-C6-alkylsulfinyl, C1-C6-alkylsulfonyl, C1-C6-haloalkyl, C1-C6-haloalkoxy, C1-C6-haloalkylthio, C1-C6-haloalkylsulfinyl or C1-C6-haloalksulfonyl; n is 0, 1, 2 or 3; R5 is phenyl or a 5- or 6-membered heterocycle; X is O or NRx, wherein Rx is H, C1-C6