| abstract |
A compound of the formula I ** Formula ** in free or salt form, wherein 5 Ar1 is phenyl substituted by one or more substituents selected from halogen, cyano, nitro, and C1-C8 alkyl optionally substituted by cyano or halogen, Ar2 it is phenyl or naphthyl which is substituted or not substituted by one or more substituents selected from halogen, cyano, hydroxy, nitro, C1-C8 alkyl, C1-C8 haloalkyl, C1-C8 alkoxy or C1-C8 alkoxycarbonyl, 10 R1 is alkyl C1-C8 substituted by hydroxy, C1-C8 alkoxy, acyloxy, -N (R2) R3, halogen, carboxy, C1-C8 alkoxycarbonyl, phenyl-C1-C8 alkoxycarbonyl, -CON (R4) R5 or by a monovalent cyclic organic group , R2 and R3 are each independently hydrogen or C1-C8 alkyl, or R2 is hydrogen and R3 is acyl or -SO2R6, or R2 and R3 together with the nitrogen atom to which they adhere denote a heterocyclic group of 5 or 6 members, R4 and R5 are each independently hydrogen, C1-C8 alkyl optionally substituted by hydroxy or phenyl, or phenyl or optionally substituted by C1-C8 alkyl, halogen, cyano or C1-C8 alkoxy, or R4 and R5 together with the nitrogen atom to which they adhere denote a 5- or 6-membered heterocyclic group which, when R1 is C1-alkyl C4, can optionally be substituted by at least one C1-C8 alkyl, R6 is C1-C8 alkyl, C1-C8 haloalkyl, or phenyl optionally substituted by C1-C8 alkyl, and n is 1, 2,3 or 4. |