Patents by Inventor Frederic R. Leroux

Frederic R. Leroux 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).

  • Process for preparing 3-fluoroalkyl-5-pyrazolecarboxylates and 3-fluoroalkyl-5-pyrazolecarboxylic acids
    Patent number: 10556867
    Abstract: The present invention relates to a novel process for preparing 3-fluoroalkyl-5-pyrazolecarboxylates from ketimines and oxalic acid derivatives which can be further transformed into 3-fluoroalkyl-5-pyrazolecarboxylic acids.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: February 11, 2020
    Assignees: BAYER CROPSCIENCE AKTIENGESELLSCHAFT, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Sergii Pazenok, Jean-Pierre Vors, Frédéric R. LeRoux, Etienne Schmitt
  • PROCESS FOR PREPARING 3-FLUOROALKYL-5-PYRAZOLECARBOXYLATES AND 3-FLUOROALKYL-5-PYRAZOLECARBOXYLIC ACIDS
    Publication number: 20190225586
    Abstract: The present invention relates to a novel process for preparing 3-fluoroalkyl-5-pyrazolecarboxylates from ketimines and oxalic acid derivatives which can be further transformed into 3-fluoroalkyl-5-pyrazolecarboxylic acids.
    Type: Application
    Filed: September 18, 2017
    Publication date: July 25, 2019
    Applicants: BAYER CROPSCIENCE AKTIENGESELLSCHAFT, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Sergii PAZENOK, Jean-Pierre VORS, Frédéric R. LEROUX, Etienne SCHMITT
  • Process for preparing substituted pyrazoles containing haloalkoxy- and haloalkylthio groups from alpha,alpha -dihaloalkylamines and ketimines
    Patent number: 10273215
    Abstract: The present invention relates to a novel process for preparing 3,5-bis substituted pyrazoles containing haloalkoxy- and haloalkylthio groups.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: April 30, 2019
    Assignees: BAYER CROPSCIENCE AKTIENGESELLSCHAFT, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Sergii Pazenok, Jean-Pierre Vors, Frédéric R. Leroux, Etienne Schmitt
  • Process for the preparation of polyfluoroalkylated quinolines
    Patent number: 10266494
    Abstract: The invention relates to a novel process for preparing polyfluoroalkylated quinolines from ketimines in the presence of fluoroalkylamino reagents.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: April 23, 2019
    Assignees: Bayer CropScience Aktiengesellschaft, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Sergii Pazenok, Jean-Pierre Vors, Frédéric R Leroux, Fallia Aribi, Etienne Schmitt, Armen Panossian
  • PROCESS FOR THE PREPARATION OF POLYFLUOROALKYLATED QUINOLINES
    Publication number: 20190023659
    Abstract: The invention relates to a novel process for preparing polyfluoroalkylated quinolines from ketimines in the presence of fluoroalkylamino reagents.
    Type: Application
    Filed: January 13, 2017
    Publication date: January 24, 2019
    Applicants: Bayer CropScience Aktiengesellschaft, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Sergii PAZENOK, Jean-Pierre VORS, Frédéric R LEROUX, Fallia ARIBI, Etienne SCHMITT, Armen PANOSSIAN
  • Method for producing 3,5-bis(fluoroalkyl)-pyrazol-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)-pyrazoles
    Patent number: 10035773
    Abstract: The present invention relates to novel 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and to a process for preparing 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)pyrazoles.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: July 31, 2018
    Assignees: BAYER CROPSCIENCE AG, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Sergii Pazenok, Norbert Lui, Jean-Pierre Vors, Frederic R Leroux, Florence Giornal
  • PROCESS FOR PREPARING SUBSTITUTED PYRAZOLES CONTAINING HALOALKOXY- AND HALOALKYLTHIO GROUPS FROM alpha,alpha -DIHALOALKYLAMINES AND KETIMINES
    Publication number: 20180186749
    Abstract: The present invention relates to a novel process for preparing 3,5-bis substituted pyrazoles containing haloalkoxy- and haloalkylthio groups.
    Type: Application
    Filed: June 21, 2016
    Publication date: July 5, 2018
    Inventors: Sergii PAZENOK, Jean-Pierre VORS, Frédéric R. LEROUX, Etienne SCHMITT
  • Process for preparing 3,5-bis(fluoroalkyl)pyrazole derivatives from ?,?-dihaloamines
    Patent number: 9512081
    Abstract: The present invention relates to a novel process for preparing 3,5-bis(fluoroalkyl)pyrazole derivatives from ?,?-dihaloamines.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: December 6, 2016
    Assignees: BAYER CROPSCIENCE AKTIENGESELLSCHAFT, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Sergii Pazenok, Norbert Lui, Arnd Neeff, Winfried Etzel, Jean-Pierre Vors, Frederic R. Leroux, Gregory Landelle, Mark James Ford
  • METHOD FOR PRODUCING 3,5-BIS(FLUOROALKYL)-PYRAZOL-4-CARBOXYLIC ACID DERIVATIVES AND 3,5-BIS(FLUOROALKYL)-PYRAZOLES
    Publication number: 20160185731
    Abstract: The present invention relates to novel 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and to a process for preparing 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)pyrazoles.
    Type: Application
    Filed: March 3, 2016
    Publication date: June 30, 2016
    Inventors: Sergii PAZENOK, Norbert LUI, Jean-Pierre VORS, Frederic R LEROUX, Florence GIORNAL
  • PROCESS FOR PREPARING 3,5-BIS(FLUOROALKYL)PYRAZOLE DERIVATIVES FROM a,a-DIHALOAMINES
    Publication number: 20160108000
    Abstract: The present invention relates to a novel process for preparing 3,5-bis(fluoroalkyl)pyrazole derivatives from ?,?-dihaloamines.
    Type: Application
    Filed: May 19, 2014
    Publication date: April 21, 2016
    Inventors: Sergii PAZENOK, Norbert LUI, Arnd NEEFF, Winfried ETZEL, Jean-Pierre VORS, Frederic R. LEROUX, Gregory LANDELLE, Mark James FORD
  • Method for producing 3,5-bis(fluoroalkyl)-pyrazol-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)-pyrazoles
    Patent number: 9309202
    Abstract: The present invention relates to novel 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and to a process for preparing 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)pyrazoles.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: April 12, 2016
    Assignee: BAYER CROPSCIENCE AG
    Inventors: Sergii Pazenok, Norbert Lui, Jean-Pierre Vors, Frederic R. Leroux, Florence Giornal
  • Procedure for the decarboxylation of 3,5-bis(haloalkyl)-pyrazole-4-carboxylic acid derivatives
    Patent number: 9145370
    Abstract: A new process for the preparation of 3,5-bis(haloalkyl)-pyrazole derivatives of the general formula (I) is described, resulting from the reaction of 3,5-bis(haloalkyl)-pyrazole-4-carboxylic acid derivatives of the general formula (IIa) with a copper compound and a base at elevated temperature wherein R1 is selected from H, C1-12-alkyl, C3-8-cycloalkyl, C6-18-aryl, C7-19-arylalkyl or C7-19-alkylaryl, CH2CN, CH2CX3, CH2COOH, CH2COO(C1-12)-alkyl, and X is independently of each other F, Cl, Br, I; R2 and R3 are selected independently of each other from C1-C6-haloalkyl.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: September 29, 2015
    Assignees: BAYER CROPSCIENCE AG, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Sergii Pazenok, Jean-Pierre Vors, Frederic R. Leroux, Florence Giornal
  • PROCEDURE FOR THE DECARBOXYLATION OF 3,5-BIS(HALOALKYL)-PYRAZOLE-4-CARBOXYLIC ACID DERIVATIVES
    Publication number: 20150225350
    Abstract: A new process for the preparation of 3,5-bis(haloalkyl)-pyrazole derivatives of the general formula (I) is described, resulting from the reaction of 3,5-bis(haloalkyl)-pyrazole-4-carboxylic acid derivatives of the general formula (Ha) with a copper compound and a base at elevated temperature wherein R1 is selected from H, C1-12-alkyl, C3-8-cycloalkyl, C6-18-aryl, C7-19-arylalkyl or C7-19-alkylaryl, CH2CN, CH2CX3, CH2COOH, CH2COO(C1-12)-alkyl, and X is independently of each other F, Cl, Br, I; R2 and R3 are selected independently of each other from C1-C6-haloalkyl.
    Type: Application
    Filed: August 28, 2013
    Publication date: August 13, 2015
    Applicants: BAYER CROPSCIENCE AG, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Sergii Pazenok, Jean-Pierre Vors, Frédéric R. Leroux, Florence Giornal
  • METHOD FOR PRODUCING 3,5-BIS(FLUOROALKYL)-PYRAZOL-4-CARBOXYLIC ACID DERIVATIVES AND 3,5-BIS(FLUOROALKYL)-PYRAZOLES
    Publication number: 20150011779
    Abstract: The present invention relates to novel 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and to a process for preparing 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)pyrazoles.
    Type: Application
    Filed: January 31, 2013
    Publication date: January 8, 2015
    Inventors: Sergii Pazenok, Norbert Lui, Jean-Pierre Vors, Frederic R. Leroux, Florence Giornal