Patents by Inventor Albert Buforn

Albert Buforn 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).

  • Processes for the preparation of pesticidal compounds and novel intermediates thereof
    Patent number: 6812347
    Abstract: A process for the preparation of a compound of the formula (I): wherein R1 is CN or CSNH2; X is N or CR4; R2 and R4 are each independently hydrogen or chloro; R3 is halo, haloalkyl, haloalkoxy or —SF5; R5 and R6 are each independently alkyl and n is 0, 1 or 2; said process comprising reacting a compound of the formula (II): wherein the symbols are as defined above and W is H, with an alkylating agent of the formula (III): R6—Y  (III) wherein R6 is as defined above and Y is a leaving group. The process may also be conducted by reacting a compound of formula (II) initially with an inorganic salt or an organic base, and reacting the resultant salt of the compound of formula (II) with the alkylating agent.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: November 2, 2004
    Assignee: Bayer Cropscience S.A.
    Inventors: Jean-François Rousseau, Albert Buforn
  • Processes for the preparation of pesticidal compounds and novel intermediates thereof
    Publication number: 20030166940
    Abstract: A process for the preparation of a compound of the formula (I): 1
    Type: Application
    Filed: April 30, 2003
    Publication date: September 4, 2003
    Inventors: Jean-Francois Rousseau, Albert Buforn
  • Intermediates for the preparation of 2-imidazolin-5-ones
    Patent number: 6570021
    Abstract: Novel 2-thiothiazolidin-5-one compounds useful as intermediates for fungicidal 2-imidazolin-5-ones are disclosed.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: May 27, 2003
    Assignee: Rhone-Poulenc Agro
    Inventors: Albert Buforn, Alain Gadras
  • Intermediates for the preparation of 2-imidazolin-5-ones
    Publication number: 20020038034
    Abstract: Novel 2-thiothiazolidin-5-one compounds useful as intermediates for fungicidal 2-imidazolin-5-ones are disclosed.
    Type: Application
    Filed: September 5, 2001
    Publication date: March 28, 2002
    Inventors: Albert Buforn, Alain Gadras
  • Intermediates for the preparation of 2-imidazoline-5-ones
    Patent number: 6320057
    Abstract: Novel 2-thio-thiazolidine-5-one compounds useful as intermediates for fungicidal 2-imidazoline-5-ones are disclosed.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: November 20, 2001
    Assignee: Rhone Poulenc Agro
    Inventors: Albert Buforn, Alain Gadras
  • Process for preparing hydroxyalkylating agents, the agents so obtained, and their use
    Patent number: 5023361
    Abstract: Hydroxyalkylating agents of formula: ##STR1## in which R denotes alkyl, n is 2 or 3, R.sub.1 denotes hydrogen or alkyl and R.sub.2 denotes alkyl an unsubstituted or substituted phenyl or ##STR2## are useful inter alia for the preparation of 1-(hydroxyalkyl)imidazoles. They are made by reaction of a sulphonic acid or dimethyl sulphate with a corresponding decarboxylate ester.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: June 11, 1991
    Assignee: Rhone-Poulenc Sante
    Inventors: Viviane Massonneau, Michel Mulhauser, Albert Buforn
  • Process for preparing 1-hydroxyalkyl-5-nitroimidazoles
    Patent number: 4925952
    Abstract: Process for preparing 1-(hydroxyalkyl)nitroimidazoles of formula: ##STR1## which comprises reacting an alkylene sulphate of formula: ##STR2## with an imidazole derivative of formula: ##STR3## followed by hydrolyzing or alcoholyzing the product obtained. In the formulae (I) and (II), n is 2 or 3; in the formulae (I) and (III), R denotes hydrogen or hydrocarbon radical; and in the formula (III), X denotes hydrogen or a radical that can be removed by hydrolysis or alcoholysis.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: May 15, 1990
    Assignee: Rhone-Poulenc Sante
    Inventors: Viviane Massonneau, Michel Mulhauser, Albert Buforn, Bernadette Mandard-Cazin
  • Process for preparing 1-hydroxyalkyl-2-methyl-5-nitroimidazoles
    Patent number: 4925951
    Abstract: Process for preparing 1-(hydroxyalkyl)nitroimidazoles of formula: ##STR1## which comprises reacting a sulphite or diacetate of an alkylenediol of formula:HO-(CH.sub.2).sub.n -OH (II)in the presence of a strong acid (sulphuric acid) with an imidazole derivative of formula: ##STR2## followed by hydrolizing or alcoholizing the product obtained. In the formulae (I) and (III), R denotes hydrogen or hydrocarbon. In the formulae (I) and (II), n is 2 or 3. In the formula (III), X denotes hydrogen or a radical which can be removed by hydrolysis or alcoholysis.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: May 15, 1990
    Assignee: Rhone-Poulenc Sante
    Inventors: Viviane Massonneau, Michel Mulhauser, Albert Buforn
  • Process for preparing 1-hydroxyalkyl-5-nitroimidazole
    Patent number: 4925950
    Abstract: Hydroxyalkylating agents of formula: ##STR1## in which R denotes alkyl, n is 2 or 3, R.sub.1 denotes hydrogen or alkyl and R.sub.2 denotes alkyl an unsubstituted or substituted phenyl or ##STR2## are useful inter alia for the preparation of 1-(hydroxyalkyl)imidazoles. They are made by reaction of a sulphonic acid or dimethyl sulphate with a corresponding decarboxylate ester.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: May 15, 1990
    Assignee: Rhone-Poulenc Sante
    Inventors: Viviane Massonneau, Michel Mulhauser, Albert Buforn