| abstract |
Aromatic sulphoxide and sulphone of formula (I) in which the substituents and the indices have the following meaning: Het is a five- or six-membered heterocycle from the group thiophene; furan, pyrrole, pyrazole, imidazole, oxazole, thiazole, isoxazole, isothiazole, 1,2,3 triazole, (1H)1,2,4 triazole, (4H)1,2,4 triazole, pyridine, pyridine N oxide, pyridazine, pyrimidine, pyrazine, 1,2,3 triazine, 1,3,5 triazine, 1,2,4 triazine; X is nitrogen or a C-H methine group; Y is oxygen or sulphur; Z is nitrogen or a C-R<5> grouping; n is 1 or 2; and in which the substituents R, R<1>, R<2>, R<3> and R<4> have the meanings given in claim 1; a process for their preparation and their use as herbicide. |