Patents by Inventor Philippe Paul Vayron

Philippe Paul Vayron 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 preparing sulfonamidobenzofuran derivatives
    Patent number: 9334254
    Abstract: The invention relates to a process for preparing 5-sulfonamido-benzofuran derivatives of general formula: formula (I) in which R represents an alkyl or aryl group and R1 and R2 represent hydrogen or an alkyl or aryl group. According to the invention, the compounds of formula I are prepared by coupling a benzofuran derivative of general formula II, where X represents chlorine, bromine or iodine or a sulfonate group: formula (II) with a sulfonamide derivative of formula R—SO2—NH2, in the presence of a basic agent and of a catalyst system formed from a complex between a palladium compound and a ligand.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: May 10, 2016
    Assignee: SANOFI
    Inventors: Thomas Priem, Philippe Paul Vayron
  • PROCESS FOR PREPARING SULFONAMIDOBENZOFURAN DERIVATIVES
    Publication number: 20130023678
    Abstract: The invention relates to a process for preparing 5-sulfonamido-benzofuran derivatives of general formula: formula (I) in which R represents an alkyl or aryl group and R1 and R2 represent hydrogen or an alkyl or aryl group. According to the invention, the compounds of formula I are prepared by coupling a benzofuran derivative of general formula II, where X represents chlorine, bromine or iodine or a sulfonate group: formula (II) with a sulfonamide derivative of formula R—SO2—NH2, in the presence of a basic agent and of a catalyst system formed from a complex between a palladium compound and a ligand.
    Type: Application
    Filed: March 30, 2011
    Publication date: January 24, 2013
    Applicant: SANOFI
    Inventors: Thomas Priem, Philippe Paul Vayron