1-METHYL-5-ALKYLSULFONYL-, 1-METHYL-5-ALKYLSULFINYL- AND 1-METHYL-5-ALKYLTHIOSUBSTITUTED PYRAZOLYLPYRAZOLES, PROCESSES FOR THEIR PREPARATION AND THEIR USE AS HERBICIDES

摘要

The invention concerns pyrazolylpyrazoles substituted by 1-methyl-5-alkylsulphonyl, 1-methyl-5-alkylsulphinyl and 1-methyl-5-alkylthio of generalformula (I), constituting compounds with herbicidal activity. In said generalformula (I), R1 and R4 represent different substituents, R2 represents halogenor cyano, R3 represents cyano, nitro or thiocarbamoyl and n is 0, 1 or 2.