NEW SULFONYLUREA, NEW INTERMEDIATE FOR PRODUCING SAME, HERBICIDE CONTAINING SAME AND METHOD FOR CONTROLLING WEED BY USING SAME

The present invention relates to substituted sulphonylureas of the formula I in which n and m are 0 or 1 and the substituents have the following meanings: R is hydrogen, alkyl, alkenyl or alkynyl; R is halogen or trifluoromethyl when m is 0 or, in the event that m is 1, alkyl, alkenyl or alkynyl, and when X is O or S and m is 1, trifluoro- or chlorodifluoromethyl; X is O, s or N-R , where R is hydrogen or alkyl; R is hydrogen, halogen, alkyl, haloalkyl or alkoxy; A is haloalkyl, a halogen atom, cyano, nitro, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl or a radical in which B is an oxygen atom or an alkylimino group N-R ; R is hydrogen, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an alkenyl group or an alkynyl group; R is hydrogen, an alkyl group, or, together with R , a C4-C6-alkylene chain in which a methylene group can be replaced by an oxygen atom or by a C1-C4-alkylimino group, and their environmentally compatible salts. Process and intermediates for the preparation of the compounds I, and their use as herbicides and bioregulators.