5-acylamino-pyrazole derivatives, composition containing them, and their use as herbicides and plant growth

Claim 1

A 5-acylamino-pyrazole derivative of the formula ##STR193## in which R 1 represents hydrogen, nitro, flourine, chlorine, bromine or iodine; R 2 represents hydrogen, or represents straight-chain or branched alkyl with 1 to 12 carbon atoms, or represents in each case straight-chain or branched alkenyl or alkinyl with in each case 3 to 8 carbon atoms, or represents cycloalkyl which has 3 to 8 carbon atoms and is optionally substituted by alkyl with 1 to 4 carbon atoms; Ar represents phenyl, 2-pyridyl, 3-pyridyl or 4-pyridyl, in each case optionally substituted by substituents independently selected from the group consisting of halogen, cyano, nitro, in each case straight-chain or branched alkyl, alkoxy and alkoxycarbonyl with in each case 1 to 4 carbon atoms in the alkyl parts, in each case straight-chain or branched halogenoalkyl and halogenoalkoxy with in each case 1 to 4 carbon atoms and 1 to 9 identical or different halogen atoms and an --S(O) m --R 4 radical, wherein R 4 represents amino, or represents in each case straight-chain or branched alkyl, alkylamino, dialkylamino or halogenoalkyl with in each case 1 to 4 carbon atoms in the individual alkyl parts and in the case of the halogenoalkyl with 1 to 9 identical or different halogen atoms and m represents the number 0, 1 or 2; and X represents oxygen or sulphur; A represents a straight-chain or branched alkylene bridge which has 1 to 6 carbon atoms and is optionally monosubstituted or polysubstituted by identical or different substituents from the group comprising halogen and phenyl, which is optionally substituted by halogen or alkyl with 1 to 4 carbon atoms; n represents the number 0 or 1 and Y represents cyano or the grouping ##STR194## wherein X 1 represents oxygen or sulphur and R 3 represents hydroxyl, in each case straight-chain or branched alkoxy or alkylthio with in each case 1 to 6 carbon atoms, in each case straight-chain or branched alkenyloxy or alkinyloxy with in each case 3 to 8 carbon atoms, amino, in each case straight-chain or branched alkylamino or dialkylamino with in each case 1 to 6 carbon atoms in the alkyl parts, in each case straight-chain or branched alkenylamino or dialkenylamino with in each case 3 to 8 carbon atoms in the alkenyl parts or straight-chain or branched alkyl-alkenylamino with 1 to 6 carbon atoms in the alkyl part and 3 to 8 carbon atoms in the alkenyl part, or represents an --OM radical, wherein M represents one equivalent of an alkaline earth metal cation or alkali metal cation, or represents ammonium which is optionally mono-, di-, tri- or tetrasubstituted by identical or different substituents from the group comprising straight-chain or branched alkyl with 1 to 12 carbon atoms and benzyl.