申请人:Ciba-Geigy Corporation
公开号:US05013745A1
公开(公告)日:1991-05-07
2-Mercapto-1,3,4-oxadiazoles and 2-mercapto-1,3,4-thiadiazoles of the formula I ##STR1## in which X.sub.1 and X.sub.2 independently of one another are oxygen or sulfur, R.sub.1 is difluoromethyl or 3,4,4-trifluoro-3-butenyl, R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl and R.sub.3 is hydrogen, C.sub.1 -C.sub.5 alkyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy, C.sub.3 -C.sub.7 alkenyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy, C.sub.3 -C.sub.7 alkynyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy, or phenyl which is unsubstituted or substituted by halogen, NO.sub.2, CF.sub.3, C.sub.1 -C.sub.3 -alkyl or C.sub.1 -C.sub.3 alkoxy, or wherein, furthermore, R.sub.2 and R.sub.3 together can form the methylene chain (--CH.sub.2 --)n as a constituent of a 5- or 6-membered ring with the heteroatom X.sub.1, in which n is 3 or 4, and processes for the preparation of the compounds of the formula I are described. The compounds of the formula I have nematicidal properties. Nematicidal compositions which contain at least one active substance of the formula I as the active substance and furthermore methods of using the active substances and the compositions for controlling nematodes are described.
公式I中的2-Mercapto-1,3,4-oxadiazoles和2-Mercapto-1,3,4-thiadiazoles如下:## STR1 ##
其中X1和X2独立地为氧或硫,R1为二氟甲基或3,4,4-三氟-3-丁烯基,R2为氢或C1-C3烷基,R3为氢,C1-C5烷基,未取代或被卤素或C1-C3烷氧基取代,C3-C7烯基,未取代或被卤素或C1-C3烷氧基取代,C3-C7炔基,未取代或被卤素或C1-C3烷氧基取代,或苯基,未取代或被卤素,NO2,CF3,C1-C3烷基或C1-C3烷氧基取代,此外,R2和R3还可以共同形成甲基链(-CH2-)n作为5或6元环的组成部分与杂原子X1一起形成,其中n为3或4,描述了制备公式I化合物的过程。公式I化合物具有线虫杀虫性能。描述了至少包含公式I中至少一种活性物质作为活性物质的线虫杀虫组合物以及使用活性物质和组合物控制线虫的方法。