Patents by Inventor Andrea Pastorio

Andrea Pastorio 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).

  • Method for the synthesis of 5-amino-1-phenyl-3-cyano-4-trifluoromethyl sulfinyl
    Patent number: 8304559
    Abstract: The present invention relates to a method for the preparation of the 5-amino-1-phenyl-3-cyano-4-trifluoromethyl sulfinyl pyrazole having the described general formula (I), particularly preferred for the synthesis of Fipronil, through oxidation of a compound having the general formula (II) as follows: wherein R1 and R2 are independently hydrogen or halogen, and wherein the oxidizing agent is dichloroperacetic acid.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: November 6, 2012
    Assignee: Finchimica, S.p.A.
    Inventors: Andrea Pastorio, Paolo Betti
  • METHOD FOR THE SYNTHESIS OF 5-AMINO-1-PHENYL-3-CYANO-4-TRIFLUOROMETHYL SULFINYL
    Publication number: 20120184753
    Abstract: The present invention relates to a method for the preparation of the 5-amino-1-phenyl-3-cyano-4-trifluoromethyl sulfinyl pyrazole having the described general formula (I), particularly preferred for the synthesis of Fipronil, through oxidation of a compound having the general formula (II) as follows: wherein R1 and R2 are independently hydrogen or halogen, and wherein the oxidising agent is dichloroperacetic acid.
    Type: Application
    Filed: May 26, 2011
    Publication date: July 19, 2012
    Applicant: FINCHIMICA S.p.A.
    Inventors: Andrea Pastorio, Paolo Betti
  • Method for the synthesis of 5-amino-1-phenyl-3-cyano-4-trifluoromethyl sulfinyl
    Patent number: RE48674
    Abstract: The present invention relates to a method for the preparation of the 5-amino-1-phenyl-3-cyano-4-trifluoromethyl sulfinyl pyrazole having the described general formula (I), particularly preferred for the synthesis of Fipronil I, through oxidation of a compound having the general formula (II) as follows: wherein R1 and R2 are independently hydrogen or halogen, and wherein the oxidizing agent is dichloroperacetic acid.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: August 10, 2021
    Assignee: Finchimica S.p.A.
    Inventors: Andrea Pastorio, Paolo Betti