Patents by Inventor Ulrike Wolfsperger

Ulrike Wolfsperger 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).

  • Process for the arylation of aza-heterocycles with activated aromatics in presence of caesium carbonate
    Patent number: 6933390
    Abstract: The invention concerns a process for the preparation of N-aryl-aza-heterocycles of the general formula I by reaction of aza-heterocycles with activated aryl halides with use of caesium carbonate without addition of further catalysts at room temperature.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: August 23, 2005
    Assignee: Warner-Lambert Company
    Inventors: Hubert Barth, Klaus Steiner, Simon Schneider, Ulrich Bayer, Manfred Westermayer, Ulrike Wolfsperger, Hans-Jürgen Betche
  • Process for the arylation of aza-heterocycles with activated aromatics in presence of caesium carbonate
    Publication number: 20040249185
    Abstract: The invention concerns a process for the preparation of N-aryl-aza-heterocycles of the general formula I 1
    Type: Application
    Filed: July 15, 2004
    Publication date: December 9, 2004
    Inventors: Hubert Barth, Klaus Steiner, Simon Schneider, Ulrich Bayer, Manfred Westermayer, Ulrike Wolfsperger, Hans-Jurgen Betche
  • Method for arylating aza-heterocycles with activated aromatic compounds in the presence of caesium carbonate
    Patent number: 6774242
    Abstract: The invention concerns a process for the preparation of N-aryl-aza-heterocycles of the general formula I by reaction of aza-heterocycles with activated aryl halides with use of caesium carbonate without addition of further catalysts at room temperature.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: August 10, 2004
    Assignee: Goedecke GmbH
    Inventors: Hubert Barth, Klaus Steiner, Simon Schneider, Ulrich Bayer, Manfred Westermayer, Ulrike Wolfsperger, Hans-Jürgen Betche
  • Method for producing symmetrical and asymmetrical carbonates
    Patent number: 6740768
    Abstract: Process for the preparation of symmetrical and asymmetrical carbonates of the general formula I by reaction of alcohols of the general formula II and alkyl or aryl halides of the general formula III, R—OH  II R′—HAL  III with carbon dioxide and caesium carbonate at room temperature in dipolar aprotic solvents.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: May 25, 2004
    Assignee: Goedecke GmbH
    Inventors: Hubert Barth, Klaus Steiner, Simon Schneider, Ulrich Bayer, Manfred Westermayer, Ulrike Wolfsperger
  • Method of producing heterocylic carbamates from aza-heterocyclic compounds and carbon dioxide
    Patent number: 6566533
    Abstract: The invention relates to a method of producing heterocyclic carbamates of the general formula (I) by reacting aza-heterocyclic compounds with alkyl- or aryl-halides in the presence of carbon dioxide and alkali carbonate, and to new compounds of the general formula (I).
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: May 20, 2003
    Assignee: Warner-Lambert Company LLC
    Inventors: Hubert Barth, Klaus Steiner, Simon Schneider, Ulrich Bayer, Manfred Westermayer, Ulrike Wolfsperger, Hans-Jürgen Betche