The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 1991
Filed:
Sep. 18, 1989
Ernst Beriger, Allschwil, CH;
Wolfgang Eckhardt, Lorrach, DE;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
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.