Patents by Inventor Axel Monsees
Axel Monsees 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).
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Patent number: 8969624Abstract: The invention is directed to a phosphine compound represented by general formula (1) wherein R? and R? independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R? and R? are joined together to form with the phosphorous atom a carbon-phosphorous monocycle comprising at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals; Cps is a partially substituted or completely substituted cyclopentadien-1-yl group, including substitutions resulting in a fused ring system, and wherein a substitution at the 1-position of the cyclopentadien-1-yl group is mandatory when the cyclopentadien-1-yl group is not part of a fused ring system or is part of an indenyl group. Also claimed is the use of these phosphines as ligands in catalytic reactions and the preparation of these phosphines.Type: GrantFiled: October 29, 2013Date of Patent: March 3, 2015Assignee: Evonik Degussa GmbHInventors: Herbert Plenio, Christoph Fleckenstein, Renat Kadyrov, Juan Almena, Axel Monsees, Thomas Riermeier
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Publication number: 20140058101Abstract: The invention is directed to a phosphine compound represented by general formula (1) wherein R? and R? independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R? and R? are joined together to form with the phosphorous atom a carbon-phosphorous monocycle comprising at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals; Cps is a partially substituted or completely substituted cyclopentadien-1-yl group, including substitutions resulting in a fused ring system, and wherein a substitution at the 1-position of the cyclopentadien-1-yl group is mandatory when the cyclopentadien-1-yl group is not part of a fused ring system or is part of an indenyl group. Also claimed is the use of these phosphines as ligands in catalytic reactions and the preparation of these phosphines.Type: ApplicationFiled: October 29, 2013Publication date: February 27, 2014Applicant: Evonik Degussa GmbHInventors: Herbert Plenio, Christoph Fleckenstein, Renat Kadyrov, Juan Almena, Axel Monsees, Thomas Riermeier
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Patent number: 8618328Abstract: Disclosed herein are phosphine compounds represented by the general formula (4): and corresponding phosphonium salts represented by the general formula (4a): Also disclosed are processes for the preparation of these phosphines and phosphonium salts as well as their use as ligands in catalytic reactions.Type: GrantFiled: April 2, 2012Date of Patent: December 31, 2013Assignee: Evonik Degussa GmbHInventors: Herbert Plenio, Christoph Fleckenstein, Renat Kadyrov, Juan Almena, Axel Monsees, Thomas Riermeier
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Publication number: 20120245348Abstract: Disclosed herein are phosphine compounds represented by the general formula (4): and corresponding phosphonium salts represented by the general formula (4a): Also disclosed are processes for the preparation of these phosphines and phosphonium salts as well as their use as ligands in catalytic reactions.Type: ApplicationFiled: April 2, 2012Publication date: September 27, 2012Inventors: Herbert PLENIO, Christoph FLECKENSTEIN, Renat KADYROV, Juan ALMENA, Axel MONSEES, Thomas RIERMEIER
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Patent number: 7834215Abstract: The present invention is based on new ligand systems of the general formula (I). These ligand systems can be used advantageously in transition metal-catalyzed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for preparing the ligands and the use of the complexes in asymmetric synthesis.Type: GrantFiled: March 2, 2006Date of Patent: November 16, 2010Assignee: Evonik Degussa GmbHInventors: Jens Holz, Armin Boerner, Odalys Esperanza Zayas Vargas, Juan Jose Almena Perea, Axel Monsees, Renat Kadyrov, Thomas Riermeier
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Patent number: 7763739Abstract: The present invention concerns novel bidentante optionally N-containing P-ligands of general formula (I) embracing a two-ring-system and processes for synthesizing them, transition metal complexes of these compounds and their use as catalysts.Type: GrantFiled: April 14, 2005Date of Patent: July 27, 2010Assignee: Evonik Degussa, GmbHInventors: Renat Kadyrov, Juan José Almena Perea, Axel Monsees, Thomas Riermeier, Ilias Ilaldinov
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Patent number: 7612240Abstract: The present invention is directed to a process for preparing compounds of the general formula (I). Compounds of the general formula (I) are advantageous precursors for preparing phospholane catalysts, especially bisphospholane catalysts. The invention therefore likewise provides for the use of the substances in question for preparing these catalysts.Type: GrantFiled: October 4, 2006Date of Patent: November 3, 2009Assignee: Evonik Degussa GmbHInventors: Armin Börner, Jens Holz, Juan Almena, Renat Kadyrov, Axel Monsees, Thomas Riermeier
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Publication number: 20090253907Abstract: A phosphine compound represented by general formula (1) wherein R? and R? independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R? and R? are joined together to form with the phosphorous atom a carbon-phosphorous monocycle including at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals; Cps is a partially substituted or completely substituted cyclopentadien-1-yl group, including substitutions resulting in a fused ring system, and wherein a substitution at the 1-position of the cyclopentadien-1-yl group is mandatory when the cyclopentadien-1-yl group is not part of a fused ring system or is part of an indenyl group. These phosphines can be used as ligands in catalytic reactions.Type: ApplicationFiled: August 14, 2007Publication date: October 8, 2009Inventors: Herbert Plenio, Christoph Fleckenstein, Renat Kadyrov, Juan Almena, Axel Monsees, Thomas Riermeier
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Patent number: 7589215Abstract: The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.Type: GrantFiled: December 12, 2006Date of Patent: September 15, 2009Assignee: Degussa AGInventors: Armin Boerner, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten A. Schneider, Uwe Dingerdissen, Karlheinz Drauz
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Patent number: 7589081Abstract: The present invention relates to novel nitrogen-containing monodentate phosphane ligands of formula (I) and to their use in catalytic reactions, especially in the improvement of haloaromatic compounds.Type: GrantFiled: May 3, 2004Date of Patent: September 15, 2009Assignee: DEGUSSA GmbHInventors: Alexander Zapf, Mark Sundermeier, Ralf Jackstell, Matthias Beller, Thomas Riermeier, Axel Monsees, Uwe Dingerdissen
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Patent number: 7531697Abstract: (Hetero)aromatic are prepared from halogen-substituted (hetero)aromatic compounds in the presence of a base and a palladium catalyst having a nonpyrophoric monodentate phosphane ligand. The phosphane ligand structure includes two radical groups having a tertiary carbon attached directly to phosphorous and one radical group having a primary carbon attached to the phosphorous.Type: GrantFiled: March 2, 2006Date of Patent: May 12, 2009Assignee: Degussa GmbHInventors: Juan Jose Almena Perea, Axel Monsees, Renat Kadyrov, Thomas Riermeier, Kai Rossen, Wolf-Ruediger Krahnert, Matthias Beller, Stefan Klaus, Alexander Zapf
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Publication number: 20090036713Abstract: The present invention relates to a process for the hydrogenation of imines with hydrogen in the presence of iridium catalysts. In particular the present invention relates to a process for the hydrogenation of imines with hydrogen under elevated pressure in the presence of an iridium catalysts and with or without an inert solvent, wherein the reaction mixture comprises a phosphonium chloride, bromide or iodide in the presence or in the absence of an acid, which can be an organic or inorganic acid, soluble or insoluble in the reaction mixture. Suitable imines are especially those that contain at least one (Formula I) group. If the groups are substituted asymmetrically and are thus compounds having a prochiral ketimine group, it is possible in the process according to the invention for mixtures of optical isomers or pure optical isomers to be formed if enantioselective or diastereoselective iridium catalysts are used.Type: ApplicationFiled: February 9, 2007Publication date: February 5, 2009Applicant: EVONIK DEGUSSA GmbHInventors: Juan Almena, Thomas Riermeier, Axel Monsees, Renat Kadyrov
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Publication number: 20080306264Abstract: The present invention concerns novel bidentante optionally N-containing P-ligands of general Formula (I) embracing a two-ring-system and processes for synthesizing them, transition metal complexes of these compounds and their use as catalysts.Type: ApplicationFiled: April 14, 2005Publication date: December 11, 2008Applicant: Degussa AGInventors: Renat Kadyrov, Juan Jose Almena Perea, Axel Monsees, Thomas Riermeier, Ilias Z. Ilaldinov
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Publication number: 20080287713Abstract: The present invention is directed to a process for preparing compounds of the general formula (I). Compounds of the general formula (I) are advantageous precursors for preparing phospholane catalysts, especially bisphospholane catalysts. The invention therefore likewise provides for the use of the substances in question for preparing these catalysts.Type: ApplicationFiled: October 4, 2006Publication date: November 20, 2008Inventors: Armin Borner, Jens Holz, Juan Almena, Renat Kadyrov, Axel Monsees, Thomas Riermeier
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Publication number: 20080200695Abstract: The present invention is based on new ligand systems of the general formula (I). These ligand systems can be used advantageously in transition metal-catalysed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for preparing the ligands and the use of the complexes in asymmetric synthesis.Type: ApplicationFiled: March 2, 2006Publication date: August 21, 2008Applicant: DEGUSSA GmbHInventors: Jens Holz, Armin Boerner, Odalys Esperanza Zayas Vargas, Juan Jose Almena Perea, Axel Monsees, Renat Kadyrov, Thomas Riermeier
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Publication number: 20080188691Abstract: The present invention is aimed at a process for the preparation of (hetero)aromatic aldehydes. The aldehydes are obtained from corresponding Hal?-substituted (hetero)aromatics by palladium-catalysed reductive carbonylation in the presence of a specific monodentate phosphane-based ligand system.Type: ApplicationFiled: March 2, 2006Publication date: August 7, 2008Applicant: DEGUSSA GmbHInventors: Juan Jose Almena Perea, Axel Monsees, Renat Kadyrov, Thomas Riermeier, Kai Rossen, Wolf-Rudiger Krahnert, Matthias Beller, Stefan Klaus, Alexander Zapf
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Patent number: 7361786Abstract: The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.Type: GrantFiled: December 12, 2006Date of Patent: April 22, 2008Assignee: Degussa AGInventors: Armin Boerner, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten A. Schneider, Uwe Dingerdissen, Karlheinz Drauz
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Publication number: 20070213540Abstract: The present invention relates to a process for the hydrogenation of an imines with hydrogen in the presence of iridium catalysts. In particular, the present invention relates to a process for the hydrogenation of imines with hydrogen under elevated pressure in the presence of an iridium catalyst and with or without an inert solvent, wherein the reaction mixture comprises a phosphonium chloride, bromide or iodide in the presence of an acid, which can be an organic or inorganic acid soluble or insoluble in the reaction mixture. Suitable imines are especially those that contain at least one group. If the groups are substituted asymetrically and are thus compounds having a prochiral ketitine group, it is possible in the process according to the invention for mixtures of optical isomers or pure optical isomers to be formed if enantioselective or diastereoselective iridium catatalysts are used.Type: ApplicationFiled: March 9, 2006Publication date: September 13, 2007Applicant: Degussa AGInventors: Juan Jose Perea, Thomas Riermeier, Axel Monsees, Renat Kadyrov
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Publication number: 20070197799Abstract: In the present application protection is sought for compounds of the general formula (I) as ligands for reactions catalysed by transition metals. The preparation thereof and use thereof, in particular for the preparation of ?-amino acids, is also discussed.Type: ApplicationFiled: September 24, 2005Publication date: August 23, 2007Applicant: DEGUSSA GmbHInventors: Jens Holz, Armin Borner, Juan Almena Perea, Renat Kadyrov, Axel Monsees, Thomas Riermeier
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Publication number: 20070179301Abstract: The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.Type: ApplicationFiled: December 12, 2006Publication date: August 2, 2007Applicant: DEGUSSA AGInventors: Armin Boerner, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten Schneider, Uwe Dingerdissen, Karlheinz Drauz