Patents by Inventor Juergen Kast
Juergen Kast has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6881356Abstract: A process for preparing a solution of sulfone-containing tanning materials comprises a) preparing a component A by a1) reacting phenol with concentrated sulfuric acid, with oleum of an SO3 content of from 20 to 65% by weight or with a mixture of sulfuric acid and oleum of an SO3 content of from 20 to 65% by weight, the molar ratio of total sulfuric acid, reckoned as SO3, to phenol being in the range from 0.7:1 to 1.5:1, at from 100 to 180° C. to form a mixture containing phenolsulfonic acid, dihydroxydiphenyl sulfone and sulfuric acid, or mixing the individual components to prepare a corresponding mixture, a2) then condensing said mixture with from 0.25 to 4 mol of urea and with from 0.5 to 4 mol of an aliphatic aldehyde of 1 to 6 carbon atoms per mole of phenol units present at from 40 to 90° C., a3) optionally adding a base to set a pH of from 4 to 5, b) preparing a component B by b1) reacting dihydroxydiphenyl sulfone with from 0.Type: GrantFiled: August 16, 2002Date of Patent: April 19, 2005Assignee: BASF AktiengesellschaftInventors: Gunther Pabst, Gerhard Wolf, Jürgen Kast, Jürgen Werner
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Patent number: 6700020Abstract: A semicontinuous process is provided for the preparation of 4,4′-dihydroxydiphenyl sulfone, comprising the following steps: (a) reaction of phenol with a sulfonating agent, (b) suspension of the resulting crude product in water heated to at least 40° C., which is free of inert organic solvents and can contain residual amounts of unreacted phenol, and filtration of the product, and (c) recycling of the resulting educt-containing and/or product-containing waste streams into the preparative process, wherein, in carrying out step (b), the crude product and water are used in a weight ratio of 85:15 to 55:45.Type: GrantFiled: October 10, 2002Date of Patent: March 2, 2004Assignee: BASF AktiengesellschaftInventors: Gunther Pabst, Jürgen Kast
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Patent number: 5637554Abstract: A method for controlling undesired plant growth and for regulating plant growth by allowing 4-methyl-5H-indeno[3,2-b]pyridines and 1-methyl-9H-indeno[2,3-c]pyridines of the general formula I ##STR1## where X, Y, Z and the radicals R.sup.1 to R.sup.5 have the meanings as described in the specification,to act on the plants, and novel 4-methyl-5H-indeno- [3,2-b]pyridines and herbicides and plant growth regulators containing these.Type: GrantFiled: May 12, 1995Date of Patent: June 10, 1997Assignee: BASF AktiengesellschaftInventors: Costin Rentzea, Norbert Meyer, Juergen Kast, Peter Plath, Hartmann Koenig, Albrecht Harreus, Uwe Kardorff, Matthias Gerber, Helmut Walter, Andreas Landes, Karl-Otto Westphalen
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Patent number: 5618775Abstract: Mixtures of optically active cyclohexenone oxime ethers having R- and S-configuration in the oxime ether moiety of the formula I ##STR1## (R.sup.1 =C.sub.1 -C.sub.6 -alkyl; ##STR2## X=C.sub.1-C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl; m=0-3 or 1-4 where all X's are halogen;n=0-3 or 1-5 where all X's are halogen;R.sup.2 =C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.4 -alkylthio-C.sub.1 -C.sub.6 -alkyl, substituted or unsubstituted C.sub.3 -C.sub.7 -cycloalkyl, substituted or unsubstituted C.sub.5 -C.sub.7 -cycloalkenyl, substituted or unsubstituted 5-membered saturated heterocyclic structure, substituted or unsubstituted 6- or 7-membered heterocyclic structure, substituted or unsubstituted 5-membered heteroaromatic structure, substituted or unsubstituted phenyl or pyridyl)and their agriculturally useful salts and esters with C.sub.1 -C.sub.10 -carboxylic acids and inorganic acids.Type: GrantFiled: August 11, 1994Date of Patent: April 8, 1997Assignee: BASF AktiengesellschaftInventors: Ulf Misslitz, Norbert Meyer, Juergen Kast, Wolfgang Ladner, Helmut Walter, Karl-Otto Westphalen, Uwe Kardorff, Matthias Gerber
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Patent number: 5604183Abstract: Cyclohexenone oxime ethers I ##STR1## where n is from 0 to 5, m is from 0 to 2, R.sup.1 is C.sub.1 -C.sub.6 -alkyl, R.sup.2 is C.sub.1 -C.sub.4 -alkyl or benzyl, A is unsubstituted or substituted C.sub.1 -C.sub.6 -alkylene, unsubstituted or substituted C.sub.3 -C.sub.6 -alkenylene, unsubstituted or substituted C.sub.3 -C.sub.6 -alkynylene or an unsubstituted or substituted C.sub.3 -C.sub.6 -alkylene or C.sub.4 -C.sub.6 -alkenylene chain, where in each case a methylene group may be replaced with O, S, SO, SO.sub.2 or --N(R.sup.a)--, R.sup.a is H, C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.6 -alkenyl or C.sub.3 -C.sub.6 -alkynyl, Z is phenyl, a 5-membered heteroaromatic radical or a 6-membered heteroaromatic radical having from 1 to 4 nitrogen atoms, X is NO.sub.2, CN, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -haloalkoxy, COOH, C.sub.1 -C.sub.Type: GrantFiled: September 5, 1995Date of Patent: February 18, 1997Assignee: BASF AktiengesellschaftInventors: Ulf Misslitz, Norbert Meyer, Juergen Kast, Matthias Bratz, Albrecht Harreus, Helmut Walter, Karl-Otto Westphalen, Matthias Gerber
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Patent number: 5574000Abstract: Cyclohexenone oxime ethers of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl, A is substituted or unsubstituted C.sub.4 -alkylene or C.sub.4 -alkenylene,X is nitro, cyano, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, substituted or unsubstituted benzyloxycarbonyl and/or phenyl,n is from 0 to 3 or from 1 to 5 when X is halogen,R.sup.2 is C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.4 -alkythio-C.sub.1 -C.sub.6 -alkyl, substituted or unsubstituted C.sub.3 -C.sub.7 -cycloalkyl or C.sub.5 -C.sub.Type: GrantFiled: November 17, 1994Date of Patent: November 12, 1996Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Dieter Kolassa, Norbert Meyer, Ulrich Schirmer, Albrecht Harreus, Jochen Wild, Karl-Otto Westphalen, Bruno Wuerzer
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Patent number: 5563114Abstract: Cyclohexenone oxime ethers of the general formula I ##STR1## where R.sup.1 is alkyl,A is unsubstituted or substituted C.sub.3 -, C.sub.5 - or C.sub.6 -alkylene or C.sub.3 -, C.sub.5 - or C.sub.6 -alkenylene,X is NO.sub.2, CN, halogen, alkyl, alkoxy, phenoxy, alkylthio, haloalkyl, haloalkoxy, carboxyl, alkoxycarbonyl, unsubstituted or substituted benzyloxycarbonyl and/or unsubstituted or substituted phenyl,n is 0-3 or 1-5 where X is halogen,R.sup.Type: GrantFiled: March 24, 1995Date of Patent: October 8, 1996Assignee: BASF AktiengesellschaftInventors: Norbert Meyer, Juergen Kast, Ulf Misslitz, Albrecht Harreus, Norbert Goetz, Bruno Wuerzer, Helmut Walter, Karl-Otto Westphalen, Matthias Gerber
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Patent number: 5554582Abstract: Cyclohexenone compounds of the formula ##STR1## where R.sup.1 is alkyl of 1 to 4 carbon atoms, alkenyl or alkynyl of 3 or 4 carbon atoms, haloalkenyl of 3 or 4 carbon atoms and 1 to 3 halogen substituents, or is thenyl which is unsubstituted or substituted by halo and/or alkyl, R.sup.2 is alkyl of 1 to 4 carbon atoms, and R.sup.3 is formyl, a radical of the general formula R.sup.4 XCHXR.sup.5, where X is oxygen or sulfur, and R.sup.4 and R.sup.5 are identical or different alkyl, or together denote alkylene of 1 to 4 carbon atoms and which is unsubstituted or substituted by alkyl, alkoxy, alkylthio, hydroxy, halogen, cyano or N,N-dialkylamino, have a good herbicidal action preferably on species from the grass family.Type: GrantFiled: November 30, 1992Date of Patent: September 10, 1996Assignee: BASF AktiengesellschaftInventors: Michael Keil, Ulrich Schirmer, Dieter Kolassa, Juergen Kast, Bruno Wuerzer, Norbert Meyer
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Patent number: 5523462Abstract: Cyclohexenone derivatives I ##STR1## The cyclohexenone derivatives I are suitable as herbicides and for regulating plant growth.Type: GrantFiled: April 19, 1994Date of Patent: June 4, 1996Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Thomas Zierke, Matthias Bratz, Ulf Misslitz, Norbert Meyer, Andreas Landes, Wilhelm Rademacher, Karl-Otto Westphalen, Helmut Walter
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Patent number: 5514642Abstract: Cyclohexenone oxime ethers of the formula I ##STR1##Type: GrantFiled: February 13, 1995Date of Patent: May 7, 1996Assignee: BASF AktiengesellschaftInventors: Ulf Misslitz, Norbert Meyer, Juergen Kast, Dieter Kolassa, Helmut Walter, Karl-Otto Westphalen, Matthias Gerber, Uwe Kardorff
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Patent number: 5508412Abstract: Unsaturated cyclohexenone oxime ethers I ##STR1## (Q.dbd.H, alkylcarbonyl, benzoyl, alkali metal or alkaline earth metal ion, substituted or unsubstituted ammonium ion, phosphonium ion, sulfonium ion, sulfoxonium ion, an equivalent of a transition metal cation;W=--C.tbd.C-- or --CH.dbd.CH--;R.sup.1 =substituted or unsubstituted cycloalkyl, cycloalkenyl or 6-membered heterocyclic group which has 1-2 oxygen and/or sulfur atoms and can be saturated or partially unsaturated; substituted or unsubstituted 5-membered saturated heterocycle with 1-2 oxygen and/or sulfur atoms; substituted or unsubstituted 5-membered heteroaromatic group with 1-2 nitrogen atoms and/or 1 oxygen or sulfur atom; substituted or unsubstituted phenyl, pyridyl or R.sup.9 -X-substituted alkyl with X=O, S, --SO--, --SO.sub.2 -- and R.sup.9 =alkyl, phenyl, 5/6-membered hetaryl with 1-3 hetero atoms;R.sup.2 =alkyl;R.sup.3 =H, alkyl;R.sup.4 =H, halogen, alkyl;R.sup.5 =H, alkyl;or R.sup.3 +R.sup.4, R.sup.3 +R.sup.5 or R.sup.4 +R.sup.Type: GrantFiled: July 27, 1995Date of Patent: April 16, 1996Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Norbert Meyer, Ulf Misslitz, Albrecht Harreus, Harald Rang, Matthias Gerber, Helmut Walter, Karl-Otto Westphalen
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Patent number: 5496792Abstract: Cyclohexenone oxime ethers I ##STR1## R.sup.1 =C.sub.1 -C.sub.6 -alkyl; W=unsubstituted or C.sub.1 -C.sub.3 -alkyl-substituted C.sub.2 -C.sub.4 -alkylene chain;X=NO.sub.2, CN, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl; n=0-3 or 1-5 if all X's are halogen;R.sup.2 =C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.4 -alkylthio-C.sub.1 -C.sub.6 -alkyl, substituted or unsubstituted C.sub.3 -C.sub.7 -cycloalkyl, substituted or unsubstituted C.sub.5 -C.sub.7 -cycloalkenyl, a substituted or unsubstituted 5-membered saturated heterocycle containing 1 or 2 oxygen and/or sulfur atoms, substituted or unsubstituted 6- or 7-membered heterocycle having 1 or 2 non-adjacent oxygen and/or sulfur atoms and which is saturated or mono- or diunsaturated, substituted or unsubstituted 5-membered heteroaromatic containing 1 or 2N atoms and one O or S atom, phenyl or pyridyl, both of which are unsubstituted or bear 1-3 halogen, NO.sub.Type: GrantFiled: August 11, 1994Date of Patent: March 5, 1996Assignee: BASF AktiengesellschaftInventors: Ulf Misslitz, Norbert Meyer, Juergen Kast, Kaspar Bott, Helmut Walter, Karl-Otto Westphalen, Uwe Kardorff, Matthias Gerber
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Patent number: 5411936Abstract: Cyclohexenone oxime ethers of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl, A is substituted or unsubstituted C.sub.4 -alkylene or C.sub.4 -alkenylene,x is nitro, cyano, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, substituted or unsubstituted benzyloxycarbonyl and/or phenyl,n is from 0 to 3 or from 1 to 5 when X is halogen,R.sup.2 is C.sub.1 -C.sub.6 -alkoxy-C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.4 -alkylthio-C.sub.1 -C.sub.6 -alkyl, substituted or unsubstituted C.sub.3 -C.sub.7 -cycloalkyl or C.sub.5 -C.sub.Type: GrantFiled: January 19, 1993Date of Patent: May 2, 1995Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Dieter Kolassa, Norbert Meyer, Ulrich Schirmer, Albrecht Harreus, Jochen Wild, Karl-Otto Westphalen, Bruno Wuerzer
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Patent number: 5407896Abstract: Unsaturated cyclohexenone oxime ethers I ##STR1## (Q=H, alkylcarbonyl, benzoyl, alkali metal or alkaline earth metal ion, substituted or unsubstituted ammonium ion, phosphonium ion, sulfonium ion, sulfoxonium ion, an equivalent of a transition metal cation;W=--C.tbd.C-- or --CH.dbd.CH--;R.sup.1 =substituted or unsubstituted cycloalkyl, cycloalkenyl or 6-membered heterocyclic group which has 1-2 oxygen and/or sulfur atoms and can be saturated or partially unsaturated; substituted or unsubstituted 5-membered saturated heterocycle with 1-2 oxygen and/or sulfur atoms; substituted or unsubstituted 5-membered heteroaromatic group with 1-2 nitrogen atoms and/or 1 oxygen or sulfur atom; substituted or unsubstituted phenyl, pyridyl or R.sup.9 --X-substituted alkyl with X=O, S, --SO--, --SO.sub.2 -- andR.sup.9 =alkyl, phenyl, 5/6-membered hetaryl with 1-3 hetero atoms;R.sup.2 =alkyl;R.sup.3 =H, alkyl;R.sup.4 =H, halogen, alkyl;R.sup.5 =H, alkyl;or R.sup.3 +R.sup.4, R.sup.3 +R.sup.5 or R.sup.4 +R.sup.5 together form C.Type: GrantFiled: January 28, 1993Date of Patent: April 18, 1995Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Norbert Meyer, Ulf Misslitz, Albrecht Harreus, Harald Rang, Matthias Gerber, Helmut Walter, Karl-Otto Westphalen
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Patent number: 5403812Abstract: Unsaturated cyclohexenone oxime ethers I ##STR1## (Q=H, alkylcarbonyl, benzoyl, alkali metal or alkaline earth metal ion, substituted or unsubstituted ammonium ion, phosphonium ion, sulfonium ion, sulfoxonium ion, an equivalent of a transition metal cation;W=--C.ident.C-- or --CH=CH--;R.sup.1 =substituted or unsubstituted cycloalkyl, cycloalkenyl or 6-membered heterocyclic group which has 1-2 oxygen and/or sulfur atoms and can be saturated or partially unsaturated; substituted or unsubstituted 5-membered saturated heterocycle with 1-2 oxygen and/or sulfur atoms; substituted or unsubstituted 5-membered heteroaromatic group with 1-2 nitrogen atoms and/or 1 oxygen or sulfur atom; substituted or unsubstituted phenyl, pyridyl or R.sup.9 -X-substituted alkyl with X=O, S, --SO--, --SO.sub.2 -- andR.sup.9 =alkyl, phenyl, 5/6-membered hetaryl with 1-3 hetero atoms;R.sup.2 =alkyl;R.sup.3 =H, alkyl;R.sup.4 =H, halogen, alkyl;R.sup.5 =H, alkyl;or R.sup.3 +R.sup.4, R.sup.3 +R.sup.5 or R.sup.4 +R.sup.5 together form C.sub.Type: GrantFiled: October 5, 1993Date of Patent: April 4, 1995Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Norbert Meyer, Ulf Misslitz, Albrecht Harreus, Harald Rang, Matthias Gerber, Helmut Walter, Karl-Otto Westphalen
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Patent number: 5389602Abstract: Tetrahydropyran-2,4-diones of the formula ##STR1## where R.sup.1 is hydrogen; C.sub.1 -C.sub.6 -alkyl; C.sub.2 -C.sub.6 -alkenyl; C.sub.2 -C.sub.6 -alkynyl; substituted or unsubstituted phenyl; C.sub.1 -C.sub.6 -alkylsulfonyl; substituted or unsubstituted benzenesulfonyl; C.sub.3 -C.sub.6 -alkenylcarbonyl; or substituted or unsubstituted benzoyl;R.sup.2 is C.sub.1 -C.sub.6 -alkyl; C.sub.2 -C.sub.6 -alkenyl; C.sub.2 -C.sub.6 -alkynyl; C.sub.1 -C.sub.6 -haloalkyl; or C.sub.3 -C.sub.6 -cycloalkyl;A, B and D are each .dbd.CH-- or .dbd.N--;E is oxygen, sulfur or --NR.sup.7 --.R.sup.7 is hydrogen; C.sub.1 -C.sub.6 -alkyl; C.sub.2 -C.sub.6 -alkenyl; C.sub.2 -C.sub.6 -alkanoyl; substituted or unsubstituted benzoyl; benzyl; or substituted or unsubstituted phenyl;X is halogen; C.sub.1 -C.sub.6 -alkyl; substituted or unsubstituted C.sub.3 -C.sub.6 -cycloalkyl; C.sub.2 -C.sub.6 -alkenyl; C.sub.2 -C.sub.6 -alkynyl; C.sub.1 -C.sub.6 -alkoxy; C.sub.2 -C.sub.6 -alkenyloxy; C.sub.1 -C.sub.6 -alkylthio; C.sub.1 -C.sub.Type: GrantFiled: June 15, 1993Date of Patent: February 14, 1995Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Dieter Kolassa, Norbert Meyer, Bruno Wuerzer, Karl-Otto Westphalen, Wilhelm Rademacher, Johann Jung
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Patent number: 5374609Abstract: Cyclohexenone oxime ethers I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl, A is unsubstituted or substituted C.sub.3 -C.sub.6 -alkynylene, Z is unsubstituted or substituted phenyl or a 5-membered or 6-membered heteroaromatic and R.sup.2 is C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.4 -alkylthio-C.sub.1 -C.sub.6 -alkyl, unsubstituted or substituted C.sub.3 -C.sub.7 -cycloalkyl or C.sub.5 -C.sub.7 -cycloalkenyl, an unsubstituted or substituted 5-membered saturated heterocyclic structure having one or two hetero atoms, an unsubstituted or substituted 6-membered or 7-membered saturated or monounsaturated or diunsaturated heterocyclic structure having one or two hetero atoms, an unsubstituted or substituted 5-membered heteroaromatic having one to three hetero atoms or unsubstituted or substituted phenyl or pyridyl, and their agriculturally useful salts and esters of C.sub.1 -C.sub.10 -carboxylic acids and inorganic acids, are suitable as herbicides.Type: GrantFiled: May 25, 1993Date of Patent: December 20, 1994Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Norbert Meyer, Ulf Misslitz, Albrecht Harreus, Thomas Kuekenhoehner, Harald Rang, Matthias Gerber, Karl-Otto Westphalen, Helmut Walter
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Patent number: 5364833Abstract: Cyclohexenone oxime ethers of the formula I ##STR1## where R.sup.1 is alkyl,X is halogen,n is from 1 to 5,R.sup.2 is alkoxyalkyl or alkylthioalkyl, unsubstituted of substituted cycloalkyl or cycloalkenyl, an unsubstituted or substituted 5-membered saturated heterocyclic structure having one or two oxygen and/or sulfur atoms as hetero atomsan unsubstituted or substituted 6-membered or 7-membered heterocyclic structure having not more than two oxygen and/or sulfur atoms and not more than two double bonds,an unsubstituted or substituted 5-membered heteroaromatic structure having not more than two nitrogen atoms and/or one oxygen atom or one sulfur atom,unsubstituted or substituted phenyl or pyridyl, and their agriculturally useful salts and esters of C.sub.1 -C.sub.10 -carboxylic acids and inorganic acids, processes and intermediates for their preparation and their use as herbicides.Type: GrantFiled: February 5, 1994Date of Patent: November 15, 1994Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Norbert Meyer, Ulf Misslitz, Albrecht Harreus, Helmut Walter, Matthias Gerber, Karl-Otto Westphalen
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Patent number: 5330965Abstract: Cyclohexenone oxime ethers of the formula I ##STR1## (R.sup.1 =C.sub.1 -C.sub.6 -alkyl; A=substituted or unsubstituted alkylene or alkenylene;Z=a 5-membered or 6-membered heteroaromatic structure;X=substituted or unsubstituted amino, nitro, cyano, halogen, alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, substituted or unsubstituted benzyloxycarbonyl and phenyl;n=0 to 3, or 1 to 4 where Z is halogen-substituted pyridyl; andR.sup.Type: GrantFiled: January 15, 1993Date of Patent: July 19, 1994Assignee: BASF AktiengesellschaftInventors: Ulf Misslitz, Norbert Meyer, Juergen Kast, Norbert Goetz, Albrecht Harreus, Thomas Kuekenhoehner, Bruno Wuerzer, Helmut Walter, Karl-Otto Westphalen, Matthias Gerber
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Patent number: 5250505Abstract: Cyclohexenone oxime ethers I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl, A is unsubstituted or substituted C.sub.3 -C.sub.6 -alkynylene, Z is unsubstituted or substituted phenyl an unsubstituted or substituted 6-membered or 7-membered saturated or monounsaturated or diunsaturated heterocyclic structure having one or two hetero atoms selected from the group consisting of oxygen and sulfer, and their agriculturally useful salts and esters of C.sub.1 -C.sub.10 -carboxylic acids and inorganic acids, are suitable as herbicides.Type: GrantFiled: May 8, 1991Date of Patent: October 5, 1993Assignee: BASF AktiengesellschaftInventors: Juergen Kast, Norbert Meyer, Ulf Misslitz, Albrecht Harreus, Thomas Kuekenhoehner, Harald Bang, Matthias Gerber, Karl-Otto Westphalen, Helmut Walter