Patents by Inventor Jens Holz
Jens Holz 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: 10919921Abstract: The present invention relates to chiral compounds with two optically active phosphorus atoms, chiral transition metal catalysts which comprise these compounds as ligands, a process for preparing the P-chiral compounds and processes for asymmetric synthesis using the chiral transition metal catalysts. The present invention specifically relates to a process for preparing an optically active carbonyl compound by asymmetric hydrogenation of a prochiral ?,?-unsaturated carbonyl compound with hydrogen in the presence of an optically active transition metal catalyst according to the invention. Yet more specifically, the present invention relates to a process for the asymmetric hydrogenation of citral, and also a process for preparing optically active menthol.Type: GrantFiled: May 5, 2017Date of Patent: February 16, 2021Inventors: Armin Boerner, Jens Holz, Katharina Rumpel
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Publication number: 20190211040Abstract: The present invention relates to chiral compounds with two optically active phosphorus atoms, chiral transition metal catalysts which comprise these compounds as ligands, a process for preparing the P-chiral compounds and processes for asymmetric synthesis using the chiral transition metal catalysts. The present invention specifically relates to a process for preparing an optically active carbonyl compound by asymmetric hydrogenation of a prochiral ?,?-unsaturated carbonyl compound with hydrogen in the presence of an optically active transition metal catalyst according to the invention. Yet more specifically, the present invention relates to a process for the asymmetric hydrogenation of citral, and also a process for preparing optically active menthol.Type: ApplicationFiled: May 5, 2017Publication date: July 11, 2019Inventors: Armin BOERNER, Jens HOLZ, Katharina RUMPEL
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Patent number: 8389774Abstract: The invention relates to a device and a method for the continuous reaction of a liquid and a second fluid, wherein the device comprises at least two jet loop reactors interconnected in parallel and common outer liquid recirculation.Type: GrantFiled: July 9, 2009Date of Patent: March 5, 2013Assignee: Evonik Oxeno GmbHInventors: Marc Becker, Robert Franke, Wilfried Bueschken, Armin Boerner, Jens Holz
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Publication number: 20110144391Abstract: The invention relates to a device and a method for the continuous reaction of a liquid and a second fluid, wherein the device comprises at least two jet loop reactors interconnected in parallel and common outer liquid recirculation.Type: ApplicationFiled: July 9, 2009Publication date: June 16, 2011Applicant: EVONIK OXENO GMBHInventors: Marc Becker, Robert Franke, Wilfried Bueschken, Armin Boerner, Jens Holz
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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: 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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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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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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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: 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
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Publication number: 20070149781Abstract: The present invention is directed at a process for preparing enantiomerically enriched compounds of the general formula (I). Compounds of the type shown are employed in catalyst systems.Type: ApplicationFiled: October 29, 2004Publication date: June 28, 2007Applicant: Degussa AGInventors: Thomas Riermeier, Axel Monsees, Juan Almena Perea, Renat Kadyrov, Battsengel Gotov, Werner Zeiss, Iris Nagl, Armin Borner, Jens Holz, Karlheinz Drauz, Wilfried Meichelbock
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Publication number: 20070123733Abstract: 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: May 31, 2007Applicant: DEGUSSA AGInventors: Armin BOERNER, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten Schneider, Uwe Dingerdissen, Karlheinz Drauz
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Publication number: 20050209455Abstract: 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: March 3, 2003Publication date: September 22, 2005Inventors: Armin Boerner, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten Schneider, Uwe Dingerdissen, Karlheinz Drauz
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Patent number: 6632953Abstract: Phospolanes and diphospholanes of the general formula I where: is H, C1-C6-aryl, alkylaryl, SiR32, R2 is alkyl or aryl, A is H, C1-C6-alkyl, aryl, Cl or B is a linker with 1-5 C atoms between the two P atoms, and their use as catalyst in asymmetric synthesis.Type: GrantFiled: November 15, 2000Date of Patent: October 14, 2003Assignee: BASF AktiengesellschaftInventors: Rainer Stürmer, Armin Börner, Jens Holz, Gudrun Voss
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Patent number: 6492544Abstract: Enantiomerically enriched N-acylated &bgr;-amino acids are synthesized by catalytic enantioselective hydrogenation of E-isomers and Z-isomers of 3-amino acrylic acid derivatives in the presence of a catalysts of formula (I)Type: GrantFiled: January 11, 2002Date of Patent: December 10, 2002Assignee: Degussa AGInventors: Hans-Peter Krimmer, Karlheinz Drauz, Jutta Lang, Armin Boerner, Detlef Heller, Jens Holz
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Publication number: 20020128509Abstract: Enantiomerically enriched N-acylated &bgr;-amino acids are synthesized by catalytic enantioselective hydrogenation of E-isomers and Z-isomers of 3-amino acrylic acid derivatives in the presence of a catalysts of formula (I) 1Type: ApplicationFiled: January 11, 2002Publication date: September 12, 2002Applicant: DEGUSSA AGInventors: Hans-Peter Krimmer, Karlheinz Drauz, Jutta Lang, Armin Boerner, Detlef Heller, Jens Holz
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Patent number: 6359165Abstract: Enantiomerically pure &bgr;-hydroxy esters are prepared by a process in which &bgr;-keto esters are reacted with hydrogen in the presence of catalysts of the formula LRuX2 where X is halogen, acetate, allyl, methallyl, 2-phenylallyl, perchlorate, trifluoroacetate, tetrafluoroborate, hexafluoroantimonate, hexafluorophosphate, hexafluoroarsenate or trichloroacetate, L is a bidentate phospholane of the formula I where B=a bridging link with 1-5 carbon atoms between the two phosphorus atoms, R1=H, C1-C6-alkyl, aryl, alkylaryl or SiR23, R2=alkyl or aryl, m=0 or 1, R3=H or OR4, and R4=R1, with the proviso that if m=1 then R3=H and if m=0 then R3 ≠ H.Type: GrantFiled: September 29, 1999Date of Patent: March 19, 2002Assignee: BASF AktienegesellschaftInventors: Rainer Stürmer, Martin Jochen Klatt, Armin Börmer, Jens Holz, Gudrun Voss
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Patent number: 6043396Abstract: Phospholanes and diphospholanes of the formula I ##STR1## where: R.sup.1 and R.sup.2 are, independently of one another, C.sub.1 -C.sub.6 -alkyl, aryl, alkylaryl,R.sup.1 is also hydrogen,A is either R.sup.1 or ##STR2## B is a linker having 1-5 carbon atoms between the two phosphorus atoms, and their use as catalyst in asymmetric synthesis.Type: GrantFiled: June 8, 1998Date of Patent: March 28, 2000Assignee: BASF AktiengesellschaftInventors: Rainer Sturmer, Armin Borner, Jens Holz, Gudrun Voss