Patents by Inventor Gerard Rajoharison

Gerard Rajoharison 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).

  • Stereoselective method for preparing a chiral fluorinated molecule
    Patent number: 7619111
    Abstract: A stereoselective method for preparing a chiral fluorinated molecule by converting a compound having a —OSOF group, a fluorosulfite, attached to a chiral carbon atom into a fluorinated compound by replacing the —OSOF group attached the chiral carbon with a fluorine atom where the compound having the fluorine atom in place of the —OSOF group has an inverse configuration relative to the —OSOF group.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: November 17, 2009
    Assignee: Rhodia Chimie
    Inventors: Joseph Lopez, Gérard Rajoharison, Jean-Serge Ferlut
  • Stereoselective Method for Preparing a Chiral Fluorinated Molecule
    Publication number: 20080071108
    Abstract: A stereoselective method for preparing a chiral fluorinated molecule comprising: (i) introducing a fluorosulfite compound having a C*-OSOF unit into a reactor; (2i) conducting thermal decomposition of said compound in the presence of a nucleophilic catalyst; and (3i) recovering the resultant fluorinated molecule having a C*-F unit in the inverse configuration relative to the starting C*-OSOF unit.
    Type: Application
    Filed: October 4, 2005
    Publication date: March 20, 2008
    Applicant: RHODIA CHIMIE
    Inventors: Joseph Lopez, Gerard Rajoharison, Jean-Serge Ferlut
  • Reaction for etherification of an aminophenol using a phase-transfer system
    Publication number: 20010051749
    Abstract: The invention concerns a method for transforming an aminophenol, characterized in that it consists in a step whereby said aminophenol aniline function is in the form of an anilide function and said phenol is dissolved in a hydophobic and weakly polar solvent in the presence of water, an alkaline hydroxide, a phase transfer catalyst and a halide or an alkyl pseudo-halide. The invention is applicable to organic synthesis.
    Type: Application
    Filed: March 15, 2001
    Publication date: December 13, 2001
    Inventors: Jean-Roger Desmurs, Jean-Francis Spindler, Harivelo Gerard Rajoharison