Patents Assigned to Neomps
  • Stabilized activated derivatives of carbamic acid, their process of preparation and their use for the preparation of ureas
    Patent number: 7060845
    Abstract: Process for the preparation of stable activated derivatives of carbamic acid, comprising at least one protected amino group and an activated carbamic acid function, from an amino acid derivative in which the amino group is protected. The process includes: a) a step of transformation of the —COOH group of the amino acid derivative into a —CON3 group to obtain an acyl azide; b) a step of transformation of the —CON3 group of the acyl azide into a —NCO group to obtain an isocyanate; c) a step of treating the isocyanate to obtain a stable derivative of carbamic acid.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: June 13, 2006
    Assignees: Neomps, Centre National de la Recherche Scientifique
    Inventors: Gilles Guichard, Marie-Christine Galas-Rodriguez, legal representative, Pierre Rodriguez, legal representative, Elisa Rodriguez, legal representative, Romain Rodriguez, legal representative, Vincent Semetey, Jean-Paul Briand, Marc Rodriguez, deceased
  • Novel stabilized activated derivatives of carbamic acid, their process of preparation and their use for the preparation of ureas
    Publication number: 20050159584
    Abstract: Process for the preparation of stable activated derivatives of carbamic acid, comprising at least one protected amino group and an activated carbamic acid function, from an amino acid derivative in which the amino group is protected. The process includes: a) a step of transformation of the —COOH group of the amino acid derivative into a —CON3 group to obtain an acyl azide; b) a step of transformation of the —CON3 group of the acyl azide into a —NCO group to obtain an isocyanate; c) a step of treating the isocyanate to obtain a stable derivative of carbamic acid.
    Type: Application
    Filed: March 11, 2005
    Publication date: July 21, 2005
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, NEOMPS
    Inventors: Gilles Guichard, Marc Rodriguez, Vincent Semetey, Jean-Paul Briand, Marie-Christine Galas-Rodriguez, Pierre Rodriguez, Elisa Rodriguez, Romain Rodriguez
  • Novel stabilized activated derivatives of carbamic acid, their process of preparation and their use for the preparation of ureas
    Publication number: 20050159585
    Abstract: Process for the preparation of stable activated derivatives of carbamic acid, comprising at least one protected amino group and an activated carbamic acid function, from an amino acid derivative in which the amino group is protected. The process includes: a) a step of transformation of the —COOH group of the amino acid derivative into a —CON3 group to obtain an acyl azide; b) a step of transformation of the —CON3 group of the acyl azide into a —NCO group to obtain an isocyanate; c) a step of treating the isocyanate to obtain a stable derivative of carbamic acid.
    Type: Application
    Filed: March 11, 2005
    Publication date: July 21, 2005
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, NEOMPS
    Inventors: Gilles Guichard, Marc Rodriguez, Viencent Semetey, Jean-Paul Briand, Marie-Christine Galas-Rodriguez, Pierre Rodriguez, Elisa Rodriguez, Romain Rodriguez