Compounds of the general formula wherein R 1: means H, C 1 -C 2 alkyl or C 1 -C 2 alkyloxy; wherein C 1 -C 2 alkyl and C 1 -C 2 alkyloxy can optionally be singly or multiply substituted with fluorine, R 2: H or methyl; subject to the proviso that one of the two residues R 1 or R 2 equals H; X: -(CH 2) 1 -, -(CH 2) k -O-, -CH 2 -S-, CH 2 -S 2 -, -CH(CH 3)-, -CH(CH 3)-O- or -C(CH 3) 2 -O-; k: 1 or 2; 1: 0, 1 or 2; R 4: H, C 1 -C 4 alkyl, C 3 -C 4 cycloalkyl, wherein C 1 -C 4 alkyl and C 3 -C 4 cycloalkyl can optionally be singly or multiply substituted with fluorine; or CH 2 -C 3 -C 4 cycloalkyl, wherein cycloalkyl can optionally be singly or multiply substituted with fluorine; and in the case of X: -CH 2 - or -CH(CH 3)- R 4: additionally means a 4-6-membered heterocyclyl residue, which can optionally be singly or multiply substituted with fluorine, hydroxy, methoxy or with oxo; and in the case of X: -(CH 2) 1 - or -CH(CH 3)- R 4: additionally means CN; X together with R 4 form a 4-6-membered heterocyclyl residue via a ring carbon linkage, which can optionally be singly or multiply substituted with fluorine, hydroxy, methoxy or with oxo; m: 1 or 2; n: 1 or 2; Ar: a 6-10-membered aryl or 5-10-membered hetaryl residue, which each can optionally be singly substituted with fluorine, chlorine or a methyl group, R 3: halogen, CN, SF 5, C 1 -C 4 alkyl, which can optionally be singly or multiply substituted with fluorine; C 3 -C 6 cycloalkyl, which can optionally be singly or multiply substituted with fluorine; C 4 -C 6 heterocyclyl, which can optionally be singly or multiply substituted with fluorine, hydroxy, methoxy or with oxo; O-C 1 -C 4 alkyl, which can optionally be singly or multiply substituted with fluorine; O-C 3 -C 6 cycloalkyl, wherein cycloalkyl can optionally be singly or multiply substituted with fluorine; O-C 4 -C 6 heterocyclyl, wherein heterocycyl can optionally be singly or multiply substituted with fluorine, hydroxy, methoxy or with oxo; S-C 1 -C 4 alkyl, wherein alkyl can optionally be singly or multiply substituted with fluorine; S 2 -C 1 -C 4 alkyl, wherein alkyl can optionally be singly or multiply substituted with fluorine; Ar', O-Ar', C(CH 3) 2 -CN or C(CH 3) 2 -OH; and Ar': an optionally singly or doubly substituted 6-membered aryl or 5-6-membered heteroaryl residue; wherein the substituents are selected from C 1 -C 4 alkyl, O-C 1 -C 4 alkyl, which each can optionally be singly or multiply substituted with fluorine, C(CH 3) 2 -CN, C(CH 3) 2 -OH, F, Cl, CN, and C NH 2; and diastereomers, enantiomers and salts or cyclodextrin clathrates thereof. R 1: means H, C 1 -C 2 alkyl or C 1 -C 2 alkyloxy; wherein C 1 -C 2 alkyl and C 1 -C 2 alkyloxy can optionally be singly or multiply substituted with fluorine, R 2: H or methyl; subject to the proviso that one of the two residues R 1 or R 2 equals H; X: -(CH 2) 1 -, -(CH 2) k -O-, -CH 2 -S-, CH 2 -S 2 -, -CH(CH 3)-, -CH(CH 3)-O- or -C(CH 3) 2 -O-; k: 1 or 2; 1: 0, 1 or 2; R 4: H, C 1 -C 4 alkyl, C 3 -C 4 cycloalkyl, wherein C 1 -C 4 alkyl and C 3 -C 4 cycloalkyl can optionally be singly or multiply substituted with fluorine; or CH 2 -C 3 -C 4 cycloalkyl, wherein cycloalkyl can optionally be singly or multiply substituted with fluorine; R 4: additionally means a 4-6-membered heterocyclyl residue, which can optionally be singly or multiply substituted with fluorine, hydroxy, methoxy or with oxo; R 4: additionally means CN; X together with R 4 form a 4-6-membered heterocyclyl residue via a ring carbon linkage, which can optionally be singly or multiply substituted with fluorine, hydroxy, methoxy or with oxo; m: 1 or 2; n: 1 or 2; Ar: a 6-10-membered aryl or 5-10-membered hetaryl residue, which each can optionally be singly substituted with fluorine, chlorine or a methyl group, R 3: halogen, CN, SF 5, C 1 -C 4 alkyl, which can optionally be singly or multiply substituted with fluorine; C 3 -C 6 cycloalkyl, which can optionally be singly or multiply substituted with fluorine; C 4 -C 6 heterocyclyl, which can optionally be singly or multiply substituted with fluorine, hydroxy, methoxy or with oxo; O-C 1 -C 4 alkyl, which can optionally be singly or multiply substituted with fluorine; O-C 3 -C 6 cycloalkyl, wherein cycloalkyl can optionally be singly or multiply substituted with fluorine; O-C 4 -C 6 heterocyclyl, wherein heterocycyl can optionally be singly or multiply substituted with fluorine, hydroxy, methoxy or with oxo; S-C 1 -C 4 alkyl, wherein alkyl can optionally be singly or multiply substituted with fluorine; S 2 -C 1 -C 4 alkyl, wherein alkyl can optionally be singly or multiply substituted with fluorine; Ar', O-Ar', C(CH 3) 2 -CN or C(CH 3) 2 -OH; and Ar': an optionally singly or doubly substituted 6-membered aryl or 5-6-membered heteroaryl residue; wherein the substituents are selected from C 1 -C 4 alkyl, O-C 1 -C 4 alkyl, which each can optionally be singly or multiply substituted with fluorine, C(CH 3) 2 -CN, C(CH 3) 2 -OH, F, Cl, CN, and C NH 2;