Patents by Inventor Reinhard Lantzsch

Reinhard Lantzsch 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).

  • Method for preparing substituted 5-amino-n-phenyl-1,2,4-triazole-3-sulfonamides
    Publication number: 20030162975
    Abstract: The present invention relates to a process for preparing 5-amino-N-phenyl-1,2,4-triazole-3-sulfonamides of the general formula (I) 1
    Type: Application
    Filed: December 12, 2002
    Publication date: August 28, 2003
    Inventors: Christian Beier, Reinhard Lantzsch
  • Method of production of benzofuranone oximes
    Patent number: 6603025
    Abstract: The present invention relates to a novel process for preparing known benzofuranone oximes, and to a novel process for preparing known benzofuranyl alkanoates which are used as intermediates in the synthesis sequence.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: August 5, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Herbert Gayer, Peter Gerdes, Walter Hübsch, Lubbertus Mulder, Bernd Gallenkamp, Matthias Decker
  • Method for producing 2-alkyl-3-chlorophenols
    Publication number: 20030092944
    Abstract: The invention relates to a novel process for preparing 2-alkyl-3-chlorophenols.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 15, 2003
    Inventors: Walter Hbsch, Reinhard Lantzsch, Thorsten Mh, Holger Weintritt
  • Method for the production of N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides and new intermediate products
    Patent number: 6545154
    Abstract: The invention relates to a process for preparing N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides in which, in a first step, 2-amino-4,5-difluoro-benzonitrile is reacted with sulphonyl halides in the presence of an acid acceptor and in the presence of a diluent at temperatures between 0° C. and 150° C. and, in a second step, the N-(2-cyano-4,5-difluoro-phenyl)-sulphonamides and/or N-(2-cyano-4,5-difluoro-phenyl)-sulphonimides obtained in the first step are as pure substances or as mixtures with ammonia in the presence of a diluent reacted at a temperature between 100° C. and 200° C. The invention furthermore relates to novel intermediates of the process.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: April 8, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Achim Hupperts, Mark Wilhelm Drewes, David Erdman, Reinhard Lantzsch
  • Method for producing sulfonyl imidazole derivatives
    Publication number: 20030040630
    Abstract: Sulphonyl-imidazole derivatives of the formula 1
    Type: Application
    Filed: August 2, 2002
    Publication date: February 27, 2003
    Inventors: Holger Weintritt, Reinhard Lantzsch, Thorsten Muh
  • Method for the production of N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides and new intermediate products
    Publication number: 20030040626
    Abstract: The invention relates to a process for preparing N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides in which, in a first step, 2-amino-4,5-difluoro-benzonitrile is reacted with sulphonyl halides in the presence of an acid acceptor and in the presence of a diluent at temperatures between 0° C. and 150° C. and, in a second step, the N-(2-cyano-4,5-difluoro-phenyl)-sulphonamides and/or N-(2-cyano-4,5-difluoro-phenyl)-sulphonimides obtained in the first step are as pure substances or as mixtures with ammonia in the presence of a diluent reacted at a temperature between 100° C. and 200° C. The invention furthermore relates to novel intermediates of the process.
    Type: Application
    Filed: September 5, 2001
    Publication date: February 27, 2003
    Inventors: Achim Hupperts, Mark Wilhelm Drewes, David Erdman, Reinhard Lantzsch
  • Process for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl) dioxazines
    Publication number: 20020169316
    Abstract: Process for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines The present invention relates to a plurality of novel processes and novel intermediates for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines, which are known as intermediates for preparing compounds having fungicidal properties (WO 95-04728).
    Type: Application
    Filed: June 5, 2002
    Publication date: November 14, 2002
    Applicant: Bayer Aktiengesellschaft
    Inventors: Herbert Gayer, Bernd Gallenkamp, Peter Gerdes, Ulrich Heinemann, Bernd-Wieland Kruger, Reinhard Lantzsch, Thomas Seitz, Uwe Stelzer
  • Processes for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl) dioxazines
    Patent number: 6479675
    Abstract: The present invention relates to a plurality of novel processes and novel intermediates for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines, which are known as intermediates for preparing compounds having fungicidal properties (WO 95-04728).
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: November 12, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Gayer, Bernd Gallenkamp, Peter Gerdes, Ulrich Heinemann, Bernd-Wieland Krüger, Reinhard Lantzsch, Thomas Seitz, Uwe Stelzer
  • Method for producing ar(alk)yluraciles, novel corresponding intermediate products and method for producing said intermediate products
    Patent number: 6476224
    Abstract: The invention relates to a process for preparing ar(alk)yluracils of the general formula (I) in which A represents a single bond or represents alkanedlyl, Ar represents optionally substituted aryl, R1 represents optionally substituted alkyl and R2 represents hydrogen, halogen or alkyl, and to novel intermediates for this purpose and to processes for their preparation.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: November 5, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernd Gallenkamp, Reinhard Lantzsch, Lothar Rohe, Lubbertus Mulder
  • Method of preparing benzofurandione oxime derivatives
    Patent number: 6462205
    Abstract: The present invention relates to a novel process for preparing benzofurandioneoxime derivatives by reacting benzofurandioneoxime derivatives with acids.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: October 8, 2002
    Assignee: Bayer Aktiengesellscahft
    Inventors: Walter Hübsch, Lubbertus Mulder, Bernd Gallenkamp, Herbert Gayer, Reinhard Lantzsch
  • Process for producing substituted arylpyrazoles
    Patent number: 6433210
    Abstract: The invention relates to a process for preparing substituted arylpyrazoles of the general formula (I) in which R1, R2, R3 and R4 are each as defined in the description, and to novel intermediates for preparing these arylpyrazoles.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: August 13, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Thomas Himmler, Albrecht Marhold
  • Substituted diphenyl oxazolin derivatives with insecticidal effect
    Patent number: 6414000
    Abstract: The present invention relates to novel oxazoline derivatives of the formula (I) in which the radicals A, B, Q and R are each as defined in the description to processes for their preparation and to their use for controlling animal pests.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: July 2, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Krämer, Udo Kraatz, Reinhard Lantzsch, Albrecht Marhold, Christoph Erdelen, Ulrike Wachendorff-Neumann, Andreas Turberg, Norbert Mencke
  • Method for production of 2,4,5-trifluoro-benzonitrile
    Patent number: 6399807
    Abstract: The invention relates to a process for preparing 2,4,5-trifluoro-benzonitrile of the formula (I) in which 2,4,5-trifluoro-aniline of the formula (II) is, in a first step A), reacted with a nitrosating agent in the presence of a diluent and in which, in a second step B), the reaction product obtained in step A) is reacted with an alkali metal cyanide in the presence of a transition metal compound, an acid acceptor and a diluent.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: June 4, 2002
    Assignee: Bayer Aktiegesellschaft
    Inventors: Achim Hupperts, Reinhard Lantzsch
  • Method for producing triazolinethione derivatives
    Patent number: 6372916
    Abstract: According to a novel process, it is possible to prepare triazolinethione derivatives of the formula in which R1 and R2 are each as defined in the description by a) reacting hydrazine derivatives of the formula  with carbonyl compounds of the formula in which R3 and R4 are each as defined in the description with potassium thiocyanate, sodium thiocyanate or ammonium thiocyanate, if appropriate in the presence of a diluent and if appropriate in the presence of an acid, and b) reacting the resulting triazolidinethione derivatives of the formula  with formic acid, if appropriate in the presence of a catalyst and if appropriate in the presence of a diluent. The triazolidinethione derivatives of the formula (V) are novel.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: April 16, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Manfred Jautelat, Achim Hupperts, David Erdman
  • Process for producing substituted arylpyrazoles
    Publication number: 20020032337
    Abstract: The invention relates to a process for preparing substituted arylpyrazoles of the general formula (I) 1
    Type: Application
    Filed: July 26, 2001
    Publication date: March 14, 2002
    Inventors: Reinhard Lantzsch, Thomas Himmler, Albrecht Marhold
  • Fluoromethoximino compounds
    Publication number: 20020028811
    Abstract: The invention relates to novel fluoromethoximino compounds, to a process for their preparation and to their use as pesticides, and also to novel intermediates and to a plurality of processes for their preparation.
    Type: Application
    Filed: August 20, 2001
    Publication date: March 7, 2002
    Inventors: Ulrich Heinemann, Herbert Gayer, Peter Gerdes, Albrecht Marhold, Uwe Stelzer, Reinhard Lantzsch, Ralf Tiemann, Klaus Stenzel, Astrid Mauler-Machnik, Stefan Dutzmann, Martin Kugler, Hans-Ulrich Buschhaus
  • Method for producing triazolinthion derivatives
    Publication number: 20020026058
    Abstract: According to a novel process, it is possible to prepare triazolinethione derivatives of the formula 1
    Type: Application
    Filed: February 26, 2001
    Publication date: February 28, 2002
    Inventors: Manfred Jautelat, Achim Hupperts, Reinhard Lantzsch
  • Method for producing ar(alk)yluraciles, novel corresponding intermediate products and method for producing said intermediate products
    Publication number: 20020022727
    Abstract: The invention relates to a process for preparing ar(alk)yluracils of the general formula (I) 1
    Type: Application
    Filed: February 14, 2001
    Publication date: February 21, 2002
    Inventors: Bernd Gallenkamp, Reinhard Lantzsch, Lothar Rohe, Lubbertus Mulder
  • Method for producing triazolinthion derivatives
    Patent number: 6344587
    Abstract: According to a novel process, it is possible to prepare triazolinethione derivatives of the formula in which R1 and R2 are each as defined in the description by a) reacting hydrazine derivatives of the formula  or their acid addition salts with an inorganic or organic acid with thiocyanate of the formula Y-SCN  (III)  in which Y represents sodium, potassium or ammonium in the presence of a diluent and, if appropriate, in the presence of a catalyst and b) reacting the resulting thiosemicarbazide derivatives of the formula  with formic acid, if appropriate in the presence of a catalyst and if appropriate in the presence of a diluent. The thiosemicarbazide derivatives of the formula (IV) are novel.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: February 5, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Achim Hupperts, Reinhard Lantzsch
  • Method for producing triazolinethione derivatives
    Publication number: 20010056187
    Abstract: According to a novel process, it is possible to prepare triazolinethione derivatives of the formula 1
    Type: Application
    Filed: December 28, 2000
    Publication date: December 27, 2001
    Inventors: Reinhard Lantzsch, Manfred Jautelat, Achim Hupperts, David Erdman