Patents by Inventor Daniel Varraillon

Daniel Varraillon 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 azetidine derivatives
    Patent number: 8207355
    Abstract: This invention discloses and claims an industrial method for the production of azetidine derivatives, such as, N-(1-benzhydrylazetidin-3-yl)-N-phenylmethylsulphonamide.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: June 26, 2012
    Assignee: Sanofi-Aventis
    Inventors: Antony Bigot, Philippe Boffelli, Maxime Lampilas, Pascale Marolleau, Alain Medard, Gilles Oddon, Daniel Varraillon
  • METHOD FOR PREPARING AZETIDINE DERIVATIVES
    Publication number: 20110118481
    Abstract: This invention discloses and claims an industrial method for the production of azetidine derivatives, such as, N-(1-benzhydrylazetidin-3-yl)-N-phenylmethylsulphonamide.
    Type: Application
    Filed: June 14, 2010
    Publication date: May 19, 2011
    Applicant: SANOFI-AVENTIS
    Inventors: Antony Bigot, Philippe Boffelli, Maxime Lampilas, Pascale Marolleau, Alain Medard, Gilles Oddon, Daniel Varraillon
  • Process for 1-phenyl-imidazoline-2,5-diones
    Patent number: 5166358
    Abstract: A process for the preparation of a compound of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are individually selected from the group consisting of hydrogen, alkyl and alkoxy of 1 to 7 carbon atoms, alkenyl, alkynyl, alkenyloxy and alkynyloxy of 2 to 7 carbon atoms, phenyl, phenoxy, --NO.sub.2, --CF.sub.3, acyl of 1 to 7 carbon atoms and esteri-fied carboxy and R.sub.4, R.sub.5 and R.sub.6 are individually hydrogen or alkyl of 1 to 7 carbon atoms comprising reacting a compound of the formula ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 have the above definitions and Hal is halogen with a compound of the formula ##STR3## wherein R.sub.4, R.sub.5 and R.sub.6 have the above definitions in the presence of a catalyst and optionally a solvent.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: November 24, 1992
    Assignee: Roussel Uclaf
    Inventors: Patrick Seuron, Daniel Varraillon