Patent ID: 7863445

Claim:
A carboxylic acid derivative of the formula I wherein R is â€”CO 2 H or another radical which can be hydrolyzed to â€”CO 2 H; R 2 is C 1 -C 4 -alkoxy; X is CR 14 , where R 14 is hydrogen or C 1 -C 5 -alkyl, or CR 14 forms together with CR 3 a 5- or 6-membered alkylene or alkenylene ring which can be substituted by one or two C 1 -C 4 -alkyl groups and in which in each case a methylene group can be replaced by oxygen; R 3 is C 1 -C 4 -alkoxy or CR 3 is linked to CR 14 to give a 5- or 6-membered ring; R 4 and R 5 are independently phenyl or naphthyl, which are connected together in the ortho position via a direct linkage, a methylene, ethylene or ethenylene group, an oxygen or sulfur atom or an SO 2 , NH or N-alkyl group or a C 3 -C 7 -cycloalkyl group; R 6 is hydrogen, C 1 -C 8 -alkyl or C 3 -C 8 -cycloalkyl, where each of these radicals can be substituted by one or more substituents selected from the group consisting of: halogen, nitro, cyano, C 1 -C 4 -alkoxy, C 3 -C 6 -alkenyloxy, C 3 -C 6 -alkynyloxy, C 1 -C 4 -alkylthio, C 1 -C 4 -haloalkoxy, C 1 -C 4 -alkylcarbonyl, C 1 -C 4 -alkoxycarbonyl, C 3 -C 8 -alkylcarbonylalkyl, C 1 -C 4 -alkylamino, di-C 1 -C 4 -alkylamino, phenyl and phenoxy which is substituted by one or more substituents selected from the group consisting of: halogen, nitro, cyano, C 1 -C 4 -alkyl, C 1 -C 4 -haloalkyl, C 1 -C 4 -alkoxy, C 1 -C 4 -haloalkoxy and C 1 -C 4 -alkylthio; or phenyl or naphthyl, each of which can be substituted by one or more of the following radicals selected from the group consisting of: halogen, nitro, cyano, hydroxyl, amino, C 1 -C 4 -alkyl, C 1 -C 4 -haloalkyl, C 1 -C 4 -alkoxy, C 1 -C 4 -haloalkoxy, phenoxy, C 1 -C 4 -alkylthio, C 1 -C 4 -alkylamino, C 1 -C 4 -dialkylamino, dioxomethylene and dioxoethylene; Y is oxygen; and Z is oxygen.