Patents by Inventor Guenter Schlegel

Guenter Schlegel 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 phosphorus containing cyanohydrins
    Patent number: 10961265
    Abstract: The present invention relates primarily to a process for preparing certain phosphorus-containing cyanohydrins of the formula (I), and also to certain phosphorus-containing cyanohydrins per se and to their use for the preparation of glufosinate and/or glufosinate salts. The present invention further relates to certain mixtures particularly suitable for preparing the phosphorus-containing cyanohydrins of the formula (I).
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: March 30, 2021
    Assignee: BASF SE
    Inventors: Hans-Joachim Ressel, Kilian Tellman, Mark James Ford, Martin Littmann, Friedrich August Muehlthau, Guenter Schlegel
  • Process for producing phosphorus-containing cyanohydrin esters
    Patent number: 10941167
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: March 9, 2021
    Assignee: BASF SE
    Inventors: Hans-Joachim Ressel, Kilian Tellmann, Mark James Ford, Martin Littmann, Günter Schlegel
  • Catalytic hydrogenation of substituted cyanopyridines and process for preparing substituted pyridylmethylbenzamides
    Patent number: 10781176
    Abstract: The present invention relates to novel processes for the preparation of substituted pyridyl-methylbenzamide derivatives of formula (I), in particular 2,6-dichloro-N-{[3-chloro-5-(trifluoromethyl)-2-pyridyl]methyl}benzamide (Fluopicolide), and for the catalytic hydrogenation of substituted cyanopyridine derivatives, in particular 3-chloro-2-cyano-5-trifluoromethylpyridine [=Py-CN] to the corresponding substituted 2-methylaminopyridine derivatives, in particular 2-aminomethyl-3-chloro-5-trifluoromethylpyridine [=Py-methylamine] or salts thereof in the presence of metal catalysts such as in particular palladium catalysts, catalytic modifiers and acids.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: September 22, 2020
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Wahed Ahmed Moradi, Günter Schlegel, Albert Schnatterer, Frank Volz
  • Catalytic hydrogenation of substituted cyanopyridines and process for preparing substituted pyridylmethylbenzamides
    Patent number: 10647674
    Abstract: The present invention relates to novel processes for the preparation of substituted pyridyl-methylbenzamide derivatives of formula (I), in particular 2,6-dichloro-N-{[3-chloro-5-(trifluoromethyl)-2-pyridyl]methyl}benzamide (Fluopicolide), and for the catalytic hydrogenation of substituted cyanopyridine derivatives, in particular 3-chloro-2-cyano-5-trifluoromethylpyridine [=Py-CN] to the corresponding substituted 2-methylaminopyridine derivatives, in particular 2-aminomethyl-3-chloro-5-trifluoromethylpyridine [=Py-methylamine] or salts thereof in the presence of metal catalysts such as in particular palladium catalysts, catalytic modifiers and acids.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 12, 2020
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Wahed Ahmed Moradi, Günter Schlegel, Albert Schnatterer, Frank Volz
  • Process for producing phosphorus-containing cyanohydrin esters
    Patent number: 10611785
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: April 7, 2020
    Assignee: BASF SE
    Inventors: Hans-Joachim Ressel, Kilian Tellmann, Mark James Ford, Martin Littmann, Günter Schlegel
  • Catalytic hydrogenation of nitriles
    Patent number: 10414730
    Abstract: The present invention relates to a novel catalytic hydrogenation of substituted 2-methyl cyanopyridyl derivatives, in particular 3-chloro-5-(trifluoromethyl)pyridin-2-yl]acetonitrile [=Py-CN] to substituted 2-ethylaminopyridine derivatives, in particular 2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethanamine [=Py-ethanamine] or salts thereof in the presence of metal catalysts, in particular palladium catalysts.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: September 17, 2019
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Wahed Ahmed Moradi, Thomas Himmler, Thomas Norbert Müller, Albert Schnatterer, Günter Schlegel
  • Process for producing phosphorus-containing cyanohydrin esters
    Patent number: 10316048
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: June 11, 2019
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim Ressel, Kilian Tellmann, Mark James Ford, Martin Littmann, Günter Schlegel
  • Process for producing phosphorus-containing cyanohydrin esters
    Patent number: 10196410
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 5, 2019
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim Ressel, Kilian Tellmann, Mark James Ford, Martin Littmann, Günter Schlegel
  • PROCESS FOR PRODUCING PHOSPHORUS-CONTAINING CYANOHYDRIN ESTERS
    Publication number: 20180319827
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Application
    Filed: August 30, 2016
    Publication date: November 8, 2018
    Inventors: Hans-Joachim RESSEL, Kilian TELLMANN, Mark James FORD, Martin LITTMANN, Günter SCHLEGEL
  • CATALYTIC HYDROGENATION OF SUBSTITUTED CYANOPYRIDINES AND PROCESS FOR PREPARING SUBSTITUTED PYRIDYLMETHYLBENZAMIDES
    Publication number: 20180297952
    Abstract: The present invention relates to novel processes for the preparation of substituted pyridyl-methylbenzamide derivatives of formula (I), in particular 2,6-dichloro-N-{[3-chloro-5-(trifluoromethyl)-2-pyridyl]methyl}benzamide (Fluopicolide), and for the catalytic hydrogenation of substituted cyanopyridine derivatives, in particular 3-chloro-2-cyano-5-trifluoromethylpyridine [=Py-CN] to the corresponding substituted 2-methylaminopyridine derivatives, in particular 2-aminomethyl-3-chloro-5-trifluoromethylpyridine [=Py-methylamine] or salts thereof in the presence of metal catalysts such as in particular palladium catalysts, catalytic modifiers and acids.
    Type: Application
    Filed: April 26, 2016
    Publication date: October 18, 2018
    Inventors: Wahed Ahmed MORADI, Günter SCHLEGEL, Albert SCHNATTERER, Frank VOLZ
  • PROCESS FOR PRODUCING PHOSPHORUS-CONTAINING CYANOHYDRIN ESTERS
    Publication number: 20180251481
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Application
    Filed: August 29, 2016
    Publication date: September 6, 2018
    Applicant: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim RESSEL, Kilian TELLMANN, Mark James FORD, Martin LITTMANN, Günter SCHLEGEL
  • PROCESS FOR PRODUCING PHOSPHORUS-CONTAINING CYANOHYDRIN ESTERS
    Publication number: 20180244702
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Application
    Filed: August 29, 2016
    Publication date: August 30, 2018
    Inventors: Hans-Joachim RESSEL, Kilian TELLMANN, Mark James FORD, Martin LITTMANN, Günter SCHLEGEL
  • CATALYTIC HYDROGENATION OF NITRILES
    Publication number: 20180244621
    Abstract: The present invention relates to a novel catalytic hydrogenation of substituted 2-methyl cyanopyridyl derivatives, in particular 3-chloro-5-(trifluoromethyl)pyridin-2-yl]acetonitrile [=Py-CN] to substituted 2-ethylaminopyridine derivatives, in particular 2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethanamine [=Py-ethanamine] or salts thereof in the presence of metal catalysts, in particular palladium catalysts.
    Type: Application
    Filed: May 2, 2018
    Publication date: August 30, 2018
    Inventors: Wahed Ahmed Moradi, Thomas Himmler, Thomas Norbert Müller, Albert Schnatterer, Günter Schlegel
  • Catalytic hydrogenation of nitriles
    Patent number: 9988353
    Abstract: The present invention relates to a novel catalytic hydrogenation of substituted 2-methyl cyanopyridyl derivatives, in particular 3-chloro-5-(trifluoromethyl)pyridin-2-yl]acetonitrile [=Py-CN] to substituted 2-ethylaminopyridine derivatives, in particular 2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethanamine [=Py-ethanamine] or salts thereof in the presence of metal catalysts, in particular palladium catalysts.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: June 5, 2018
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Wahed Ahmed Moradi, Thomas Himmler, Thomas Norbert Mueller, Albert Schnatterer, Guenter Schlegel
  • Preparation of N-[(6-chloropyridin-3-yl)methyl]-2,2-difluoroethan-1-amine by alkylation of 2,2-difluoroethylamine
    Patent number: 9890120
    Abstract: A process for preparing N-[(6-chloropyridin-3-yl)methyl]-2,2-difluoroethan-1-amine of formula (III) wherein 2,2-difluoroethylamine of formula (I) is reacted with a halide of formula (II) in the presence of a hydroxide of an alkali metal or alkaline earth metal.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: February 13, 2018
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Wahed Ahmed Moradi, Guenter Schlegel, Albert Schnatterer
  • Process for preparing phosphorus containing cyanohydrins
    Patent number: 9850263
    Abstract: The present invention relates primarily to a process for preparing certain phosphorus-containing cyanohydrins of the formula (I), and also to certain phosphorus-containing cyanohydrins per se and to their use for the preparation of glufosinate and/or glufosinate salts. The present invention further relates to certain mixtures particularly suitable for preparing the phosphorus-containing cyanohydrins of the formula (I).
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: December 26, 2017
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim Ressel, Kilian Tellman, Mark James Ford, Martin Littmann, Friedrich August Muehlthau, Guenter Schlegel
  • PROCESS FOR PREPARING PHOSPHORUS CONTAINING CYANOHYDRINS
    Publication number: 20170313730
    Abstract: The present invention relates primarily to a process for preparing certain phosphorus-containing cyanohydrins of the formula (I), and also to certain phosphorus-containing cyanohydrins per se and to their use for the preparation of glufosinate and/or glufosinate salts. The present invention further relates to certain mixtures particularly suitable for preparing the phosphorus-containing cyanohydrins of the formula (I).
    Type: Application
    Filed: July 20, 2017
    Publication date: November 2, 2017
    Inventors: Hans-Joachim RESSEL, Kilian TELLMAN, Mark James FORD, Martin LITTMANN, Friedrich August MUEHLTHAU, Guenter SCHLEGEL
  • Preparation of halogenated di-substituted benzylamines, particularly halogenated dialkylbenzylamines
    Patent number: 9670135
    Abstract: The present invention relates to a novel process for preparing halogenated di-substituted benzylamines, particularly halogenated dialkylbenzylamines.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: June 6, 2017
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Johann Seeba, Günter Schlegel, Martin Littmann, Rafael Warsitz, Mark James Ford
  • Preparation of N-[(6-chloropyridin-3-yl)methyl]-2,2-difluoroethan-1-amine by alkylation of 2,2-difluoroethylamine
    Publication number: 20170081284
    Abstract: A process for preparing N-[(6-chloropyridin-3-yl)methyl]-2,2-difluoroethan-1-amine of formula (III) wherein 2,2-difluoroethylamine of formula (I) is reacted with a halide of formula (II) in the presence of a hydroxide of an alkali metal or alkaline earth metal.
    Type: Application
    Filed: March 18, 2015
    Publication date: March 23, 2017
    Applicant: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Wahed Ahmed MORADI, Guenter SCHLEGEL, Albert SCHNATTERER
  • PROCESS FOR PREPARING PHOSPHORUS CONTAINING CYANOHYDRINS
    Publication number: 20170081349
    Abstract: The present invention relates primarily to a process for preparing certain phosphorus-containing cyanohydrins of the formula (I), and also to certain phosphorus-containing cyanohydrins per se and to their use for the preparation of glufosinate and/or glufosinate salts. The present invention further relates to certain mixtures particularly suitable for preparing the phosphorus-containing cyanohydrins of the formula (I).
    Type: Application
    Filed: May 8, 2015
    Publication date: March 23, 2017
    Applicant: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim RESSEL, Kilian TELLMAN, Mark James FORD, Martin LITTMANN, Friedrich August MUEHLTHAU, Guenter SCHLEGEL