DERIVATIVES OF SACCHARIN CARBOXYLIC ACID AND HERBICIDE AGENT BASED ON THEREOF Russian patent published in 2000 - IPC

FIELD: organic chemistry, herbicides. SUBSTANCE: invention relates to the novel derivatives of saccharin carboxylic acid of the general formula (I) where L, M mean hydrogen atom, alkyl with 1-4 carbon atoms, alkoxyl with 1-4 carbon atoms, alkylthio-group with 1-4 carbon atoms, chlorine atom, methylsulfonyl-group; Z means hydrogen atom, alkyl with 1-4 carbon atoms, benzyl or phenyl; R means hydrogen atom, alkyl with 1-6 carbon atoms under condition that Z does not mean methyl, phenyl or hydrogen atom and 5-carboxy-7-methyl-saccharin are excluded. Herbicide agent containing the compound of the general formula (I) as an active component where R means hydrogen atom or alkyl with 1-6 carbon atoms, L and M mean hydrogen atom or alkyl with 1-4 carbon atoms, Z means alkyl with 1-4 carbon atoms is taken in the effective amount. EFFECT: new compounds indicated above. 2 cl, 2 tbl, 15 ex