Patents by Inventor Albrecht Marhold

Albrecht Marhold 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).

  • Halogen pyrimidines and its use thereof as parasite abatement means
    Patent number: 6407233
    Abstract: Compounds of the formula (I) in which A represents optionally substituted alkanediyl, R represents in each case optionally substituted cycloalkyl, aryl or benzo-fused heterocyclyl, E represents —CH═ or nitrogen, Q represents oxyen, sulphur, —C2—O—, a single bond, or a nitrogen atom which is optionally substituted by alkyl, and X represents halogen.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: June 18, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Heinemann, Herbert Gayer, Peter Gerdes, Bernd-Wieland Krüger, Bernd Gallenkamp, Uwe Stelzer, Albrecht Marhold, Ralf Tiemann, Stefan Dutzmann, Gerd Hänssler, Klaus Stenzel
  • Process for preparing [bis-(trifluoromethyl)-phenyl]-acetic acids and alkyl esters thereof and dialkyl [bis-(trifluoromethyl)-phenyl]-malonates
    Patent number: 6395921
    Abstract: [Bis-(trifluoromethyl)-phenyl]-acetic acids are obtained in an advantageous manner by reacting an appropriate bromo- or iodo-bis-(trifluoromethyl)-benzene with a di-C1-C4-alkyl malonate in the presence of a deprotonating agent and a copper salt and hydrolysing and decarboxylating the reaction product in basic medium. It is possible to obtain a mixture of alkyl [bis-(trifluoromethyl)-phenyl]-acetate and alkyl [bis-(tri-fluoromethyl)-phenyl]-malonate by admixing the reaction mixture which is present before hydrolysis and complete decarboxylation with water and acid and heating. From the mixture, it is possible to obtain alkyl [bis-(trifluoromethyl)-phenyl]-acetate by distillation under reduced pressure and dialkyl [bis-(trifluoromethyl)-phenyl]-malonate by work-up by column chromatography, fractional distillation or film distillation. [Bis-(trifluoromethyl)-phenyl]-malonic esters are novel compounds.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: May 28, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Albrecht Marhold, Jörn Stölting
  • Halogenzimidazoles and their use as microbicides
    Patent number: 6387939
    Abstract: New halogenobenzimidazoles of the formula in which A, R1, R2, R3, R4 and X have the meanings given in the description, and their acid addition salts and metal salt complexes, a process for their preparation and their use as microbicides in crop protection and in the protection of materials. New intermediates of the formulae in which R12-R17 and X have the meanings given in the description, and processes for the preparation of these substances.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: May 14, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lutz Assmann, Albrecht Marhold, Ralf Tiemann, Klaus Stenzel
  • Process for preparing fluorine-containing benzaldehydes
    Publication number: 20020038055
    Abstract: The invention relates to a particularly advantageous preparation of fluorine-containing benzaldehydes by reacting a corresponding aromatic acid chloride with hydrogen in the presence of a supported palladium catalyst and a catalyst moderator.
    Type: Application
    Filed: September 21, 2001
    Publication date: March 28, 2002
    Inventors: Kathe Baumann, Albrecht Marhold
  • 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
  • Benzimidazole derivatives
    Publication number: 20020026059
    Abstract: Novel benzimidazole derivatives of the formula 1
    Type: Application
    Filed: January 22, 2001
    Publication date: February 28, 2002
    Inventors: Lutz Assmann, Albrecht Marhold, Klaus Stenzel, Martin Kugler
  • Polyfluoroalkylsilanes
    Publication number: 20020022734
    Abstract: The invention relates to the preparation and use of polyfluoro-alkylsilanes of formula (I) 1
    Type: Application
    Filed: June 29, 2001
    Publication date: February 21, 2002
    Inventors: Albrecht Marhold, Jurgen Wiedemann, Sebastian Bach
  • Fluoromethoxyacrylic acid derivatives and their use as pest control agents
    Patent number: 6337401
    Abstract: The invention relates to new fluoromethoxyacrylic acid derivatives, a process for their preparation and their use as pesticides, as well as to new intermediates and a plurality of processes for their preparation. It has already been disclosed that certain fluoromethoxyacrylic acid derivatives which are similar in constitution to the compounds described below have fungicidal properties (compare, for example, WO 9517376). The fungicidal action of these compounds, however, is unsatisfactory in many cases.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: January 8, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Heinemann, Herbert Gayer, Peter Gerdes, Albrecht Marhold, Uwe Stelzer, Ralf Tiemann, Klaus Stenzel, Stefan Dutzmann
  • Preparation of trifluoromethylanilines
    Patent number: 6333434
    Abstract: The invention relates to a process for the preparation of trifluoromethylanilines of formula (I) wherein R1 is hydrogen, fluorine, chlorine, bromine, methyl, monochloromethyl, dichloromethyl, or formyl, and R2 is hydrogen, fluorine or chlorine, with the proviso that when R1 and R2 are both hydrogen, the amino group is para to the trifluoromethyl group, comprising (a) nitrating a benzotrichloride of formula (II)  wherein R1 and R2 are each as defined for formula (I), thereby forming a nitrobenzotrichloride, (b) converting the trichloromethyl group of the nitrobenzotrichloride into a trifluoromethyl group by reaction with anhydrous hydrofluoric acid, thereby forming a nitrobenzotrifluoride, and (c) reducing the nitro groups of the nitrobenzotrifluoride to form a trifluoromethylaniline of formula (I).
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: December 25, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Albrecht Marhold, Käthe Baumann
  • Fluoromethoximino compounds
    Patent number: 6306855
    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: Grant
    Filed: December 2, 1999
    Date of Patent: October 23, 2001
    Assignee: Bayer Aktiengesellschaft
    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
  • 3-cyano-2,4,5-trifluoro-benzoyl fluoride and intermediate products for the production thereof
    Publication number: 20010023300
    Abstract: The present invention relates to 3-cyano-2,4,5-trifluorobenzoyl fluoride and to intermediates for its preparation and to the process for the preparation of 3-cyano-2,4,5-trifluoro-benzoyl fluoride, which starts from 5-fluoro-1,3-xylene (VIII); which is bichlorinated in the ring in the presence of a catalyst under ionic conditions to give 2,4-dichloro-5-fluoro-1,3-dimethylbenzene (VII). The latter is chlorinated in the side chains under free-radical conditions to give 2,4-dichloro-5-fluoro-3-dichloromethyl-1-trichloromethylbenzene (VI).
    Type: Application
    Filed: March 21, 2001
    Publication date: September 20, 2001
    Inventors: Albrecht Marhold, Peter Wolfrum
  • Process for the preparation of 3,5-bis(trifluoro-methyl)-benzoyl chlorides and novel 3,5-bis(tri-halogenomethyl)-and 3,5-dimethylbenzoyl halides
    Publication number: 20010014759
    Abstract: 3,5-Bis(trifluoromethyl)benzoyl chlorides optionally substituted with fluorine or chlorine are advantageously prepared by converting 3,5-dimethylbenzoic acids optionally substituted with fluorine or chlorine into the corresponding acid chlorides; completely free-radically chlorinating said chlorides in the side chains, giving 3,5-bis(trichloromethyl)benzoyl chlorides optionally substituted by fluorine or chlorine; fluorinating the latter with anhydrous hydrogen fluoride and/or antimony pentafluoride, giving 3,5-bis(trifluoromethyl)benzoyl fluorides optionally substituted with fluorine or chlorine; and then reacting the 3,5-bis(trifluoromethyl)benzoyl fluorides with silicon tetrachloride in the presence of a further Lewis acid. Some of the 3,5-bis(trihalogenomethyl) and 3,5-dimethylbenzoyl halides which arise as intermediates are novel compounds.
    Type: Application
    Filed: January 25, 2001
    Publication date: August 16, 2001
    Inventors: Albrecht Marhold, Jorn Stolting
  • Halobenzimidazoles and their use as microbicides
    Patent number: 6268508
    Abstract: New halogenobenzimidazoles of the formula in which A, R1, R2, R3, R4 and X have the meanings given in the description, and their acid addition salts and metal salt complexes, a process for their preparation and their use as microbicides in crop protection and in the protection of materials. New intermediates of the formulae in which R12-R17 and X have the meanings given in the description, and processes for the preparation of these substances.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: July 31, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lutz Assmann, Albrecht Marhold
  • 3-thiocarbamoylpyrazole derivatives as pesticides
    Patent number: 6265430
    Abstract: The invention relates to new 3-thiocarbarnoylpyrazole derivatives of the formula (I) in which Ar represents in each case optionally substituted phenyl or pyridyl, R1 represents H2N—CS— and R2 and R3 are as defined in the description, to a plurality of processes for their preparation and to their use as pesticides.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: July 24, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernd Alig, Achim Bertsch, Dietmar Bielefeldt, Norbert Lui, Albrecht Marhold, Christoph Erdelen, Wolfram Andersch, Andreas Turberg, Norbert Mencke
  • 3-THIOCARBAMOYLPYRAZOLE DERIVATIVES AS PESTICIDES
    Publication number: 20010007876
    Abstract: The invention relates to new 3-thiocarbamoylpyrazole derivatives of the formula (I) 1
    Type: Application
    Filed: May 6, 1999
    Publication date: July 12, 2001
    Inventors: BERND ALIG, ACHIM BERTSCH, DIETMAR BIELEFELDT, NORBERT LUI, ALBRECHT MARHOLD, CHRISTOPH ERDELEN, WOLFRAM ANDERSCH, ANDREAS TURBERG, NORBERT MENCKE
  • Substituted thiazolines and their use for controlling animal pests
    Patent number: 6255328
    Abstract: The invention relates to novel substituted thiazolines of the formula (I) in which Ar1 and Ar2 each represent independently of one another optionally substituted phenyl, processes for their preparation, and their use for controlling animal pests.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: July 3, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernd Alig, Udo Kraatz, Wolfgang Krämer, Reinhard Lantzsch, Albrecht Marhold, Christoph Erdelen, Ulrike Wachendorff-Neumann, Andreas Turberg, Norbert Mencke
  • Process for preparing phenethylamines and novel chemical compounds
    Patent number: 6255528
    Abstract: Fluorine-containing phenethylamines are obtained in an advantageous manner by reacting fluorine-containing bromobenzenes with acrylamide in the presence of a palladium catalyst, hydrogenating the resulting arylacrylamides catalytically and then rearranging the arylamides obtained. The invention also embraces novel arylacrylamides and novel arylamides.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: July 3, 2001
    Inventors: Peter Müller, Albrecht Marhold
  • Benzimidazole derivatives
    Patent number: 6235765
    Abstract: Novel benzimidazole derivatives of the formula in which R1, R2, X1, X2, X3, X4 and Y are each as defined in the description, and acid addition salts and metal salt complexes thereof, a process for preparing these compounds and their use as microbicides in crop protection and in the protection of materials.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: May 22, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lutz Assmann, Albrecht Marhold, Klaus Stenzel, Martin Kugler
  • Process for the preparation of anilines which contain fluorine and new anilines which contain fluorine
    Patent number: 6235939
    Abstract: Anilines which contain fluorine in a side chain are prepared by reacting chlorinated aromatic compounds with ammonia in the presence of a catalyst and optionally water at 200 to 280° C. Some of the trifluoromethoxy-anilines which may be prepared in this way are new compounds.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: May 22, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventor: Albrecht Marhold