Patents by Inventor Norbert Lui

Norbert Lui 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).

  • NOVEL METHOD FOR PRODUCING ENAMINOCARBONYL COMPOUNDS
    Publication number: 20120004416
    Abstract: The present invention relates to a process for preparing enaminocarbonyl compounds by reacting compounds of the formula (II) with compounds of the formula (III) in which the A, R1, R2 and Z radicals are each as defined in the description, in the presence of a Brønsted acid.
    Type: Application
    Filed: March 12, 2010
    Publication date: January 5, 2012
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Norbert Lui, Jens-Dietmar Heinrich
  • Process for preparing 2-2-difluoroethylamine derivatives by alkylation with 2-2-difluoroethyl-1-haloethanes
    Publication number: 20110306770
    Abstract: Process for preparing 2,2-difluorethylamine derivatives of the general formula (III) in which A is an optionally substituted heterocycle as described in the description, by reacting a 2,2-difluoroethyl-1-haloethane compound of the general formula (I) in which Hal is Cl, Br or iodine, with an amine of the general formula (II) in which A is as defined above, optionally in the presence of a base.
    Type: Application
    Filed: June 13, 2011
    Publication date: December 15, 2011
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Norbert LUI, Jens-Dietmar HEINRICH, Wahed Ahmed MORADI, Christian FUNKE
  • Method for producing alkenylnitrobenzene derivatives unbranched in the 1?-position
    Patent number: 8071824
    Abstract: The present invention relates to a process for preparing alkenylnitrobenzenes and alkylanilines, which are of significance as intermediates for fungicidally active alkylanilides.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: December 6, 2011
    Assignee: Bayer CropScience AG
    Inventors: Alexander Straub, Jörg Nico Greul, Norbert Lui
  • Process for Preparing 1-Alkyl-3-difluoromethyl-5-hydroxypyrazoles
    Publication number: 20110288304
    Abstract: The present invention relates to a process for preparing 1-alkyl-3-difluoromethyl-5-hydroxypyrazoles, which are valuable intermediates for the production of fungicides.
    Type: Application
    Filed: May 19, 2011
    Publication date: November 24, 2011
    Applicant: Bayer CropScience AG
    Inventors: Sergii PAZENOK, Michael Müller, Norbert Lui
  • Process for Preparing Dithiine-tetracarboxy-diimides
    Publication number: 20110275831
    Abstract: The present invention relates to a new process for preparing dithiine-tetracarboxy-diimides
    Type: Application
    Filed: May 5, 2011
    Publication date: November 10, 2011
    Applicant: Bayer CropScience AG
    Inventors: Norbert LUI, Jens-Dietmar HEINRICH, Thomas Himmler, Frank Volz
  • Method for producing dihalo acetoacetic alkyl esters
    Patent number: 8044231
    Abstract: The invention relates to a process for preparing alkyl dihaloacetoacetates of the formula (I) by reacting ?,?-dihaloamines of the formula (III) with acetic esters of the formula (II) in the presence of bases.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: October 25, 2011
    Assignee: Bayer Cropscience AG
    Inventors: Sergii Pazenok, Norbert Lui
  • Preparing 5-fluoro-1-alkyl-3-fluoroalkyl-1H-pyrazole-4-carbonyl chlorides
    Publication number: 20110207940
    Abstract: The present invention relates to a novel process for preparing 5-fluoro-1-alkyl-3-fluoroalkyl-1H-pyrazole-4-carbonyl chlorides, a useful intermediate in the manufacture of fungicides.
    Type: Application
    Filed: November 19, 2010
    Publication date: August 25, 2011
    Applicant: Bayer CropScience AG
    Inventors: Sergii Pazenok, Norbert Lui, Marc Kosten, Guenter Bartels
  • Method for producing substituted pyrazolecarboxylic acid chlorides
    Patent number: 7977494
    Abstract: The present invention relates to a process for preparing substituted pyrazolyl chlorides by chlorinating aldehydes of the formula (II) under free-radical conditions.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: July 12, 2011
    Assignee: Bayer Cropscience AG
    Inventors: Norbert Lui, Jens-Dietmar Heinrich, Alexander Straub, Thomas Wollner, James Mark Ford
  • PROCESS FOR PREPARING 2,2-DIFLUOROETHYLAMINE AND SALTS THEREOF PROCEEDING FROM DIFLUOROACETONITRILE
    Publication number: 20110166388
    Abstract: The present invention relates to a process for preparing 2,2-difluoroethylamine of the formula (I) and salts thereof, for example sulphates, hydrochlorides or acetates, which proceeds from difluoroacetonitrile.
    Type: Application
    Filed: December 9, 2010
    Publication date: July 7, 2011
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Norbert Lui, Stefan Antons, Wahed Ahmed Moradi
  • Process for preparing 2-aminooxyethanol
    Patent number: 7968747
    Abstract: The invention relates to a process for preparing aminoglycol by reacting ketoximes with ethylene oxide under basic conditions to give a substituted 2-hydroxyethyl ketoxime and subsequently reacting the latter with an acid to give aminoglycol.
    Type: Grant
    Filed: November 3, 2007
    Date of Patent: June 28, 2011
    Assignee: Bayer Cropscience AG
    Inventors: Sergii Pazenok, Norbert Lui
  • Process For The Preparation Of 1-Alkyl And 1-Aryl-5-pyrazolecarboxylic Acid Derivatives
    Publication number: 20110152532
    Abstract: The present invention relates to a process for the preparation of 1-alkyl- or 1-aryl-substituted 5-pyrazolecarboxylic acid derivatives comprising the reaction of substituted 1,3-dioxolanes and 1,4-dioxanes with alkyl- or arylhydrazines to give 1-alkyl- or 1-aryl-substituted dihydro-1H-pyrazoles, and their further reaction to give 1-alkyl- or 1-aryl-substituted 5-pyrazolecarboxylic acid derivatives, which can be used as valuable intermediates for producing insecticidally effective anthranilamides.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 23, 2011
    Applicant: Bayer CropScience AG
    Inventors: Sergii PAZENOK, Norbert Lui, Igor Gerus
  • Novel Dioxolane And Dioxane Derivatives And A Process For Their Preparation
    Publication number: 20110152531
    Abstract: The present invention relates to novel acylmethylene-1,3-dioxolanes and acylmethylene-1,4-dioxanes of the general formula (I) in which R1, R2, R3 and n have the meanings given in the description, and also a novel process for their preparation. Acylmethylene-1,3-dioxolanes and acylmethylene-1,4-dioxanes are important intermediates for the preparation of pyrazoles and anthranilamides, which can be used as insecticides.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 23, 2011
    Applicant: Bayer CropScience AG
    Inventors: Sergii PAZENOK, Norbert LUI, Igor GERUS, Olga BALABON
  • NOVEL SOLID FORM OF 4-[[(6-CHLOROPYRIDIN-3-YL)METHYL](2,2-DIFLUOROETHYL)AMINO]FURAN-2(5H)-ONE
    Publication number: 20110130288
    Abstract: The present invention relates to a novel solid form of 4-[[(6-chloropyridin-3-yl)methyl](2,2-difluoroethyl)amino]furan-2(5H)-one, to processes for its preparation and to its use in agrochemical preparations.
    Type: Application
    Filed: October 22, 2010
    Publication date: June 2, 2011
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Britta OLENIK, Robert VELTEN, Peter JESCHKE, Norbert LUI, Christian FUNKE, Wolfgang WIRTH
  • Tetraarylborate Process for the Preparation of Substituted Biphenyls
    Publication number: 20110105796
    Abstract: The present invention relates to a process for the preparation of substituted biphenyls by reacting aryl halides with tetraarylborates in the presence of palladium catalysts.
    Type: Application
    Filed: August 30, 2010
    Publication date: May 5, 2011
    Applicant: Bayer CropScience AG
    Inventors: Wahed Ahmed MORADI, Norbert Lui, Michael Dockner, Thomas Jagusch
  • Process for Preparing Pyridyl-Substituted Pyrazoles
    Publication number: 20110087029
    Abstract: The present invention relates to a process for preparing 1-pyridyl-substituted pyrazoles, comprising the reaction of acetyleneketones with pyridylhydrazine derivatives to give 1-pyridyl-substituted dihydro-1H-pyrazoles, the further reaction thereof with elimination of water to give 1-pyridyl-substituted trihalomethylpyrazoles, and the further processing thereof.
    Type: Application
    Filed: April 2, 2010
    Publication date: April 14, 2011
    Applicant: Bayer CropScience AG
    Inventors: Sergii Pazenok, Norbert Lui, Harry Blaschke
  • Process for Preparing 2,2-difluoroethylamine by Hydrogenating 1,1-difluoro-2-nitroethane
    Publication number: 20110082318
    Abstract: Process for preparing 2,2-difluoroethylamine, characterized in that 1,1-difluoro-2-nitroethane is subjected to a catalytic hydrogenation.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 7, 2011
    Applicant: Bayer CropScience AG
    Inventors: Stefan ANTONS, Norbert Lui, Arne Gerlach
  • Process for the Preparation of 1-Phenyl-1,2,4-triazoles
    Publication number: 20110077410
    Abstract: The present invention relates to a process for the preparation of 1-phenyl-1,2,4-triazoles by converting phenyl hydrazides to N?-(iminomethyl)-N?-phenylacetyl hydrazides and the further reaction thereof by cyclization to give 1-phenyl-1,2,4-triazoles.
    Type: Application
    Filed: August 19, 2010
    Publication date: March 31, 2011
    Applicant: Bayer CropScience AG
    Inventors: Stefan ANTONS, Norbert Lui
  • Process for preparing 2,4-dioxotetrahydrofuran-3-carboxylates
    Publication number: 20110060147
    Abstract: Process for preparing 2,4-dioxotetrahydrofuran-3-carboxylates of the formula (I) and/or (I?) comprising the reaction of a haloacetyl chloride compound of the formula (II) with a malonic ester of the formula (III) in which Hal, R1 and R2 have the definitions stated in the application, in the presence of a suitable base and optionally in the presence of a solvent; the addition of a sufficient amount of water to the reaction mixture; and the isolation of the desired 2,4-dioxotetrahydrofuran-3-carboxylate.
    Type: Application
    Filed: August 11, 2010
    Publication date: March 10, 2011
    Applicant: Bayer CropScience AG
    Inventors: Norbert Lui, Jens-Dietmar Heinrich, Christian Funke
  • Process for Preparing 2,2-Difluoroethylamine
    Publication number: 20110060167
    Abstract: The present invention relates to a process for preparing 2,2-difluoroethylamine proceeding from 2,2-difluoro-1-haloethane using ammonia in a solvent which has a maximum water content of 15% by volume and in the presence of a catalyst which accelerates the reaction with ammonia.
    Type: Application
    Filed: July 27, 2010
    Publication date: March 10, 2011
    Applicant: Bayer CropScience AG
    Inventors: Norbert LUI, Sergii Pazenok, Yuriy Grigorievich Shermolovich
  • Novel Process for the Preparation of 4-Aminobut-2-enolides
    Publication number: 20110054182
    Abstract: Process for the preparation of 4-aminobut-2-enolide compounds of the formula (I): comprising reaction of a 4-(methylamino)furan-2(5H)-one compound of the formula (II) with an amine of the formula (III) in which R1 and A have the definitions mentioned in the description, optionally in the presence of a Brønstedt acid.
    Type: Application
    Filed: August 17, 2010
    Publication date: March 3, 2011
    Applicant: Bayer CropScience AG
    Inventors: Norbert LUI, Jens-Dietmar Heinrich