Patents by Inventor Klaus Stroech

Klaus Stroech 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).

  • Patent number: 7227042
    Abstract: The present invention provides a method of preparing 1-acetyl-1-chlorocyclopropane from 1,3 dichloro-2-pentanone by reaction with base in the presence of a phase transfer catalyst. The reaction may be run in the presence or absence of an organic solvent and in a continuous or batch process.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: June 5, 2007
    Assignees: Bayer CropScience LP, Bayer CropScience Aktiengesellschaft
    Inventors: Joe J. Hanson, David M. Mayes, Klaus Stroech, Shekhar V. Kulkarni
  • Publication number: 20050222451
    Abstract: The present invention provides a method of preparing 1-acetyl-1-chlorocyclopropane from 1,3 dichloro-2-pentanone by reaction with base in the presence of a phase transfer catalyst. The reaction may be run in the presence or absence of an organic solvent and in a continuous or batch process.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 6, 2005
    Inventors: Joe Hanson, David Mayes, Klaus Stroech, Shekhar Kulkarni
  • Patent number: 5530149
    Abstract: New azolylmethyl-fluorocyclopropyl derivatives of the formula ##STR1## in which R represents ##STR2## and addition products thereof which acids or metal salts are very effective for combating fungi.New oxiranes of the formula ##STR3## in which R has the abovementioned meaning, are valuable intermediates for the preparation of compounds of the formula (I).
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: June 25, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Scherkenbeck, Thomas Himmler, Stefan Bohm, Hermann Hagemann, Klaus Stroech, Stefan Dutzmann, Heinz-Wilhelm Dehne, Gerd Hanssler
  • Patent number: 5462955
    Abstract: New azolylmethyl-fluorocyclopropyl derivatives of the formula ##STR1## in which R represents ##STR2## and addition products thereof which acids or metal salts are very effective for combating fungi.New oxiranes of the formula ##STR3## in which R has the abovementioned meaning, are valuable intermediates for the preparation of compounds of the formula (I).
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: October 31, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Scherkenbeck, Thomas Himmler, Stefan Bohm, Hermann Hagemann, Klaus Stroech, Stefan Dutzmann, Heinz-Wilhelm Dehne, Gerd Hanssler
  • Patent number: 5288883
    Abstract: Fungicidal azolyl-propanols of the formula ##STR1## in which R represents halogenoalkyl, halogenoalkenyl, a 2-phenoxy-isopropyl radical, ##STR2## Y represents nitrogen or a CH group, Z represents halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, cyano, phenoxy, halophenoxy, or optionally substituted aryl,m represents the number 0, 1, 2, or 3,and addition products thereof with acids and metal salts.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: February 22, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Scherkenbeck, Thomas Himmler, Klaus Stroech, Stefan Dutzmann, Gerd Hanssler, Heinz-Wilhelm Dehne
  • Patent number: 5262434
    Abstract: New halogenoalkyl-azolyl derivatives of the formula ##STR1## in which R.sup.1 represents optionally substituted phenyl,R.sup.2 represents hydrogen, alkyl, alkenyl, acyl or aralkyl,X.sup.1 represents halogen,X.sup.2 represents halogen,n represents 0 or 1 andY represents nitrogen or a CH groupand their acid addition salts and metal salt complexes, are outstandingly effective as microbicides in plant protection and in the preservation of materials.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: November 16, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Jurgen Scherkenbeck, Klaus Stroech, Stefan Dutzmann, Heinz Dehne, Gerd Haenssler, Karl-Heinz Kuck
  • Patent number: 5218002
    Abstract: Insect- and mite-repelling new morpholinoureas of the formula (I) ##STR1## in which the radicals R.sup.1 to R.sup.8 can be identical or different and represent hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl or optionally substituted phenyl, or where the radicals R.sup.1 and R.sup.4 and/or R.sup.5 and R.sup.8 in each case together form a carbocyclic ring,R.sup.9 represents optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl or optionally substituted benzyl, andR.sup.10 represents hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted benzyl or optionally substituted cycloalkyl,or where R.sup.9 and R.sup.10 together represent an optionally substituted polyalkylene radical which is optionally interrupted by hetero atoms.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: June 8, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Stroech, Bernd-Wieland Kruger, Peter Hoever, Gunther Nentwig
  • Patent number: 5216006
    Abstract: Fungicidal azolyl-propanols of the formula ##STR1## in which R represents halogenoalkyl, halogenoalkenyl, a 2-phenoxy-isopropyl radical, ##STR2## Y represents nitrogen or a CH group, Z represents halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, cyano, phenoxy, halo-phenoxy, or optionally substituted aryl,m represents the number 0, 1, 2, or 3, and addition products thereof with acids and metal salts.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: June 1, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Je,uml/u/ rgen Scherkenbeck, Thomas Himmler, Klaus Stroech, Stefan Dutzmann, Gerd Hanssler, Heinz-Wilhelm Dehne
  • Patent number: 5216180
    Abstract: A herbicidal hydroxyethyl-cyclopropyl-azolyl derivative of the formula ##STR1## in which R.sup.1 represents halogen, phenyl or the grouping --Z-R.sup.3, whereinZ represents oxygen, sulphur, SO or SO.sub.2 andR.sup.3 represents alkyl, phenyl or benzyl,R.sup.2 represents alkenyl, optionally substituted furyl, optionally substituted thienyl or the radical of the formula ##STR2## wherein R.sup.4 represents difluoromethoxy, 1,1,2,2-tetrafluoroethoxy, 1,1,2-trifluoro-2-chloro-ethoxy, cyano, formyl, alkoximinoalkyl, carbalkoxy, dialkoxyalkyl, phenoxyalkyl which is optionally substituted in the phenyl moiety by halogen, or benzyloxy which is optionally substituted in the phenyl moiety by halogen andR.sup.5 represents hydrogen or halogen, orR.sup.4 and R.sup.5 are linked in the ortho-position and together represent --O--CH.sub.2 --O--, orR.sup.2 represents the radical of the formula ##STR3## in which R.sup.6 represents difluoromethoxy, 1,1,2,2-tetrafluoroethoxy or 1,1,2-trifluoro-2-chloro-ethoxy, orR.sup.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: June 1, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Scherkenbeck, Monika Frie, Klaus Stroech, Thomas Himmler, Georg-W. Ludwig, Wilhelm Brandes, Stefan Dutzmann
  • Patent number: 5194636
    Abstract: In the preparation of benzyl ketones of the formula ##STR1## a benzyl chloride of the formula ##STR2## is reacted with an acid chloride of the formulaR.sup.6 --CO--Cl (III)a) in a first stage with an excess of zinc powder in the presence of a diluent at a temperature between 80.degree. C. and 200.degree. C. under an inert gas atmosphere, and separating off the excess zinc powder, thereby to obtain a benzyl derivative of the formula ##STR3## and b) in a second stage reacting the benzyl derivative of the formula (IV) with an acid chloride of the formula (III) in the presence of a palladium catalyst and in the presence of a diluent at a temperature between 0.degree. C. and 150.degree. C. under an inert gas atmosphere.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: March 16, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Himmler, Udo Kraatz, Wolfgang Kramer, Klaus Stroech
  • Patent number: 5162355
    Abstract: Fungicidal 1,2,4-triazolyl-propanols of the formula ##STR1## in which R represents methyl or ethyl,Z represents fluorine, chlorine, trifluoromethyl, trifluoromethoxy, trifluoromethylthio, methyl, phenyl which is optionally substituted by fluorine or chlorine or phenoxy which is optionally substituted by fluorine or chlorine,m represents 0, 1, 2 or 3 andn represents 4 or 5,and addition products thereof with acids and metal salts.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: November 10, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Stroech, Manfred Jautelat, Heinz-Wilhelm Dehne, Stefan Dutzmann, Gerd Hanssler
  • Patent number: 5162358
    Abstract: New halogenoalkyl-azolyl derivatives of the formula ##STR1## in which R.sup.1 represents optionally substituted alkyl, optionally substituted alkenyl or optionally substituted cycloalkyl,R.sup.2 represents hydrogen, alkyl, alkenyl, acyl or aralkyl,X.sup.1 represents halogen,X.sup.2 represents halogen,n represents 0 or 1 andY represents nitrogen or a CH group,and acid addition salts and metal salt complexes thereofare very effective for combating undesired microorganisms in plant protection and in the preservation of materials.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: November 10, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Jurgen Scherkenbeck, Klaus Stroech, Stefan Dutzmann, Heinz-Wilhelm Dehne, Gerd Hanssler, Harl-Heinz Kuck
  • Patent number: 5146001
    Abstract: In the preparation of benzyl ketones of the formula ##STR1## a benzyl chloride of the formula ##STR2## is reacted with an acid chloride of the formulaR.sup.6 --CO--Cl (III)a) in a first stage with an excess of zinc powder in the presence of a diluent at a temperature between 80.degree. C. and 200.degree. C. under an inert gas atmosphere, and separating off the excess zinc powder, thereby to obtain a benzyl derivative of the formula ##STR3## and b) in a second stage reacting the benzyl derivative of the formual (IV) with an acid chloride of the formula (III) in the presence of a palladium catalyst and in the presence of a diluent at a temperature between 0.degree. C. and 150.degree. C. under an inert gas atmosphere.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: September 8, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Himmler, Udo Kraatz, Wolfgang Kramer, Klaus Stroech
  • Patent number: 5143932
    Abstract: Microbicidal halogenoallyl-azolyl derivatives of the formula ##STR1## in which R.sup.1 represents a radical of the formula ##STR2## R.sup.2 represents hydrogen, alkyl, alkenyl, acyl or aralkyl, X.sup.1 represents halogen,X.sup.2 represents halogen,X.sup.3 represents hydrogen or halogen andY represents nitrogen or a CH group,and addition products thereof with acids and metal salts.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: September 1, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Klaus Stroech, Gerd Hanssler, Stefan Dutzmann, Karl-Heinz Kuck, Wilhelm Brandes
  • Patent number: 5140035
    Abstract: Fungicidal triazolylmethyl-cyclopropyl derivatives of the formula ##STR1## in which R represents a radical of the formula ##STR2## in which Z represents halogen, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, alkylthio having 1 to 4 carbon atoms, halogenoalkyl having 1 or 2 carbon atoms and 1 to 5 halogen atoms, halogenoalkoxy having 1 or 2 carbon atoms and 1 to 5 halogen atoms, halogenoalkylthio having 1 or 2 carbon atoms and 1 to 5 halogen atoms, phenyl which is optionally substituted by at least one of alkyl having 1 or 2 carbon atoms and halogen, or represents phenoxy which is optionally substituted by at least one of alkyl having 1 or 2 carbon atoms and halogen, andm represents the numbers 0, 1, 2 or 3,R.sup.1 represents halogen, alkyl having 1 to 4 carbon atoms or alkoxy having 1 to 4 carbon atoms,n represents the numbers 0, 1 or 2,R.sup.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: August 18, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Scherkenbeck, Klaus Stroech, Burghard Fugmann, Stefan Dutzmann
  • Patent number: 5126359
    Abstract: Antimycotically active azolyl-cyclopropyl-azolylmethylcarbinol compound of the formula ##STR1## in which R.sup.1 - represents hydrogen, or alkyl which is optionally substituted by optionally substituted aryl or- represents alkenyl or alkynyl or trialkylsilyl or alkylcarbonyl,R.sup.2 - represents optionally substituted aryl or- represents an optionally substituted 5- to 6-membered heterocycle which may contain one or more heteroatoms such as sulphur, oxygen or nitrogen,X - represents halogen, andY - represents a nitrogen atom or the CH group, and their acid addition salts.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: June 30, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Stroech, Susanne Backens-Hammerschmidt, Manfred Plempel
  • Patent number: 5122532
    Abstract: A microbicidal halogenoallyl-azolyl derivatives of the formula ##STR1## in which R.sup.1 represents halogenoallyl, propargyl, substituted cycloalkyl or optionally substituted heteroaryl, or represents a radical of the formula ##STR2## where R.sup.3 represents hydrogen, halogen, or phenyl which is optionally substituted by halogen, phenoxy which is optionally substituted by halogen or phenoxymethyl which is optionally substituted by halogen,R.sup.4 represents hydrogen or halogen, andR.sup.5 represents iso-propyl, or phenyl which is optionally substituted by halogen or phenoxy which is optionally substituted by halogen or phenoxy which is optionally substituted by halogen,R.sup.2 represents hydrogen, alkyl, alkenyl, acyl or aralkyl,X.sup.1 represents halogen,X.sup.2 represents halogen,X.sup.3 represents hydrogen or halogen andY represents nitrogen or a CH group,and addition products thereof with acids and metal salts.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: June 16, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Klaus Stroech, Gerd Hanssler, Stefan Dutzmann, Karl-Heinz Kuck, Wilhelm Brandes
  • Patent number: 5097047
    Abstract: Fungicidal and plant growth-regulating azolylmethylcyclopropyl derivatives of the formula ##STR1## in which R represents halogen, alkyl or optionally substituted phenyl, or represents the groupings --Y--R.sup.2,whereinY represents oxygen, sulphur, SO or SO.sub.2 andR.sup.2 represents optionally substituted phenyl,R.sup.1 represents hydrogen, alkyl or acyl,X represents nitrogen or a CH group,Z represents halogen, alkyl with 1 to 4 carbon atoms, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, halogenoalkyl with 1 or 2 carbon atoms and 1 to 5 halogen atoms, halogenoalkoxy with 1 or 2 carbon atoms and 1 to 5 halogen atoms, halogenoalkylthio with 1 or 2 carbon atoms and 1 to 5 halogen atoms or phenyl which is optionally substituted by alkyl with 1 or 2 carbon atoms and/or halogen, or represents phenoxy which is optionally substituted by alkyl with 1 or 2 carbon atoms and/or halogen andm represents the number 0, 1, 2 or 3, and addition products thereof with acids and metal salts.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: March 17, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Stroech, Wilhelm Brandes, Stefan Dutzmann
  • Patent number: 5096913
    Abstract: Combating phytopathogenic fungi with substituted bis-azolyl derivatives of the formula ##STR1## in which R.sup.1 is hydrogen, optionally substituted alkyl, alkenyl, trialkylsilyl or alkylcarbonyl,R.sup.2 is optionally substituted aryl or heterocyclic,X is halogen, andY is a nitrogen atom or a CH group,and addition products thereof with acids and metal salts.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: March 17, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Stroech, Susanne Backens-Hammerschmidt, Gerd Hanssler, Stefan Dutzmann
  • Patent number: 5096912
    Abstract: A microbicidal hydroxyethyl-cyclopropyl-azolyl derivative of the formula ##STR1## in which R.sup.1 represents halogen, phenyl or the grouping --Z--R.sup.3, whereinZ represents oxygen, sulphur, SO or SO.sub.2 andR.sup.3 represents alkyl, phenyl or benzyl,R.sup.2 represents alkenyl, optionally substituted furyl, optionally substituted thienyl or the radical of the formula ##STR2## wherein R.sup.4 represents difluoromethoxy, 1,1,2,2-tetrafluoroethoxy, 1,1,2-trifluoro-2-chloro-ethoxy, cyano, formyl, alkoximinoalkyl, carbalkoxy, dialkoxyalkyl, phenoxyalkyl which is optionally substituted in the phenyl moiety by halogen, or benzyloxy which is optionally substituted in the phenyl moiety by halogen andR.sup.5 represents hydrogen or halogen, orR.sup.4 and R.sup.5 are linked in the ortho-position and together represent --O--CH.sub.2 --O--, orR.sup.2 represents the radical of the formula ##STR3## in which R.sup.6 represents difluoromethoxy, 1,1,2,2-tetrafluoroethoxy or 1,1,2-trifluoro-2-chloro-ethoxy, orR.sup.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: March 17, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Scherkenbeck, Monika Frie, Klaus Stroech, Thomas Himmler, Georg-W. Ludwig, Wilhelm Brandes, Stefan Dutzmann