Patents by Inventor Andre Millet

Andre Millet 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 and reagent useful for the synthesis of sulphanilide which is perhalogenated on the carbon borne by the sulphur atom of the sulphanilide function
    Publication number: 20010020113
    Abstract: The present invention relates to a process and a reagent useful for the synthesis of sulphanilide which is perhalogenated on the carbon borne by the sulphur atom of the sulphanilide function. This persulphonylation process is characterized in that it comprises a step of placing a nucleophile, whose nucleophilic atom is a nitrogen, in contact with a reagent comprising, for successive or simultaneous addition, a heavy halide of sulphonyl, advantageously sulphonyl chloride, and an organic base comprising a trivalent atom from column V whose lone pair is conjugated directly or indirectly to a bond, and in that the organic part of the said sulphonyl is perhalogenated, advantageously perfluorinated, on the carbon borne by the sulphur. Application to the synthesis of intermediates for organic chemistry.
    Type: Application
    Filed: May 15, 2001
    Publication date: September 6, 2001
    Inventors: Jean-Roger Desmurs, Andre Millet, Virginie Pevere
  • Process and reagent useful for the synthesis of sulphanilide which is perhalogenated on the carbon borne by the sulphur atom of the sulphanilide function
    Patent number: 6271419
    Abstract: The present invention relates to a process and a reagent useful for the synthesis of sulphanilide which is perhalogenated on the carbon borne by the sulphur atom of the sulphanilide function. This persulphonylation process is characterized in that it comprises a step of placing a nucleophile, whose nucleophilic atom is a nitrogen, in contact with a reagent comprising, for successive or simultaneous addition, a heavy halide of sulphonyl, advantageously sulphonyl chloride, and an organic base comprising a trivalent atom from column V whose lone pair is conjugated directly or indirectly to a bond, and in that the organic part of the said sulphonyl is perhalogenated, advantageously perfluorinated, on the carbon borne by the sulphur. Application to the synthesis of intermediates for organic chemistry.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: August 7, 2001
    Assignee: Rhodia Chimie
    Inventors: Jean-Roger Desmurs, André Millet, Virginie Pevere