Patents by Inventor Denis Gribkov

Denis Gribkov 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).

  • Publication number: 20130035495
    Abstract: The invention relates to a process for the preparation of formula (I) which process comprises a) reacting a compound of formula (II), wherein X is chloro or bromo, with an organometallic species to (III), wherein X is chloro or bromo; reacting the halobenzyne with a fulvene (IV), to a compound of formula (V) wherein X is chloro or bromo; b) hydrogenating V in the presence of a suitable metal catalyst to a compound of formula (VI) wherein X is chloro or bromo; and either c1) reacting the compound of formula VI with NH3 in the presence of a catalyst comprising palladium and at least one ligand to the compound of formula (VII); and d) reacting the compound of formula VII in the presence of a base with a compound of formula (VIII), to the compound of formula I; or c2 reacting the compound of formula (VI) in the presence of a copper catalyst and a ligand with the compound of formula (VIIIa), to the compound of formula (I).
    Type: Application
    Filed: April 14, 2011
    Publication date: February 7, 2013
    Applicant: SYNGENTA CROP PROTECTION LLC
    Inventors: Denis Gribkov, Remo Stohler, Thomas Vettiger, Michael Rommel
  • Publication number: 20120136162
    Abstract: The invention relates to a process for the preparation of 3-difluoromethyl-1-methyl-1H-pyrazole-4-carboxylic acid (9-dichloromethylene-1,2,3,4-tetrahydro-1,4-methano-naphthalen-5-yl)-amide.
    Type: Application
    Filed: July 7, 2010
    Publication date: May 31, 2012
    Applicant: SYNGENTA CROP PROTECTION, LLC
    Inventors: Denis Gribkov, Adrian Müller, Martin Lager, Fanny Giordano
  • Publication number: 20110207958
    Abstract: The present invention relates to a novel a process for the preparation of 9-dichloromethylene-1,2,3,4-tetrahydro-1,4-methano-naphthalen-5-ylamine which process comprises a) reacting cyclopentadiene in the presence of a radical initiator and CXCI3, wherein X is chloro or bromo, to a compound of formula I1, or aa) reacting cyclopentadiene with CXCI3, wherein X is chloro, in the presence of a metal catalyst to a compound of formula I1, wherein X is chloro, b) reacting the compound of formula I1 with a base in the presence of an appropriate solvent to the compound of formula III, c) and converting the compound of formula III in the presence of 1,2-dehydro-6-nitrobenzene to the compound of formula IV, and d) hydrogenating the compound of formula IV in the presence of a metal catalyst.
    Type: Application
    Filed: September 28, 2009
    Publication date: August 25, 2011
    Applicant: SYNGENTA CROP PROTECTION LLC
    Inventors: Denis Gribkov, Bjorn Antelmann, Fanny Giordano, Harald Walter, Alain De Mesmaeker