Patents by Inventor Danielle Gree

Danielle Gree 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).

  • USE OF A COMPOSITION OF AN IONIC NATURE AS A SUBSTITUTION REAGENT, A COMPOSITION CONSTITUTING A FLUORINATION REAGENT AND A METHOD USING SAME
    Publication number: 20090036718
    Abstract: The invention relates to processes for aromatic nucleophilic substitution by contacting a substrate of formula (III) Ar-???(III) where Ar is an aromatic group where the nucleus carrying the group ? is electron-poor, either because it contains at least one heteroatom in its ring or because the sum of the Hammett constants, ?p, of its substituents, apart from said ?, is at least 0.2, and ? is a leaving group, with a composition containing at least one ionic compound whose cation is of general formula G: (R10)(R9)N—[C(R8)?C(R6)]?—C(R5)?N+(R1)(R2)??(G) wherein: ? is an integer from 0 to 4, inclusive; R1, R2, R5, R6 and R8, which are identical or different, are a hydrogen or a hydrocarbon group; and R9 and R10, which are identical or different, are a hydrocarbon group; or one or two of the substituents R1, R2, R5, R8, R9, and R10 are connected to other remaining substituent(s) to form one or two or more rings.
    Type: Application
    Filed: May 1, 2008
    Publication date: February 5, 2009
    Applicant: RHODIA CHIMIE
    Inventors: Rene GREE, Vincent Schanen, Jean-Francis Spindler, Maxime Garayt, Virginie Le Boulaire, Danielle Gree
  • Use of a composition of an ionic nature as a substrate reagent, a composition constituting a fluorination reagent and a method using same
    Patent number: 7393980
    Abstract: The invention relates to a novel method for producing nucleophilic substitutions, particularly of type SNAr and SN2. More specifically, the invention relates to the use as a fluorinating reaction medium of ionic liquid or fused salt comprising at least four carbon atoms. The invention can be used for the synthesis of fluoride derivatives.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: July 1, 2008
    Assignee: Rhodia Chimie
    Inventors: Maxime Garayt, Virginie Le Boulaire, Danielle Gree, René Gree, Vincent Schanen, Jean-Francis Spindler
  • Use of a composition of an ionic nature as a substrate reagent, a composition constituting a fluorination reagent and a method using same
    Publication number: 20040144947
    Abstract: The invention relates to a novel method for producing nucleophilic substitutions, particularly of type SNAr and SN2. More specifically, the invention relates to the use as a fluorinating reaction medium of ionic liquid or fused salt comprising at least four carbon atoms. The invention can be used for the synthesis of fluoride derivatives.
    Type: Application
    Filed: November 12, 2003
    Publication date: July 29, 2004
    Inventors: Maxime Garayt, Virginie Le Boulaire, Danielle Gree, Rene Gree, Vincent Schanen, Jean-Francis Spindler
  • Cyclised analogues of fatty acid metabolites
    Patent number: 5599975
    Abstract: A compound selected from those of formula (I): ##STR1## wherein A, X, Y, Z, R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined in the description.This compound or its physiologically tolerable salts may be used therapeutically as platelet anti-aggregation agent.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: February 4, 1997
    Assignee: Adir Et Compagnie
    Inventors: Ren e Gree, Ali M. Hachem, Danielle Gree, Yves Le Floc'h, Yves Rolland, Serge Simonet, Tony Verbeuren