Patents by Inventor Detlef Heller

Detlef Heller 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 a substituted dimethyl-(3-arylbutyl)amine compound by homogeneous catalysis
    Patent number: 8791300
    Abstract: Compounds of the formula II can be hydrogenated to the corresponding butane derivatives in the presence of homogeneous cataslysts composed of metal salts or complexes containing metals selected from the group consisting of Rh, Ir, and Ru and preferably containing diphosphine ligands, with, in addition, excellent optical yields being achieved when one of R2 and R3 is not a hydrogen atom and the diphosphine ligand is chiral.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: July 29, 2014
    Assignee: Gruenenthal GmbH
    Inventors: Wolfgang Hell, Markus Kegel, Helmut Buschmann, Felix Spindler, Detlef Heller, Hans-Joachin Drexler
  • Process for producing 6-dimethylaminomethyl-phenyl-cyclohexane-1,3-diols
    Patent number: 7858826
    Abstract: A process for producing 6-dimethylaminomethyl-1-(3-hydroxy- or 3-C1-C4 alkoxyphenyl)-cyclohexane-1,3-diols from 6-dimethylaminomethyl-1-hydroxy-1-(3-hydroxy- or 3-C1-C4 alkoxyphenyl)-cyclohexane-3-ones by catalytic hydrogenation in the presence of heterogeneous or homogeneous catalysts, or by using metal hydrides.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: December 28, 2010
    Assignee: Gruenenthal GmbH
    Inventors: Wolfgang Hell, Oswald Zimmer, Markus Kegel, Olaf Schaefer, Felix Spindler, Anita Schnyder, Urs Siegrist, Detlef Heller, Hans-Joachim Drexler
  • Process for Producing 6-Dimethylaminomethyl-phenyl-cyclohexane-1,3-diols
    Publication number: 20090227813
    Abstract: A process for producing 6-dimethylaminomethyl-1-(3-hydroxy- or 3-C1-C4 alkoxyphenyl)-cyclohexane-1,3-diols from 6-dimethylaminomethyl-1-hydroxy-1-(3-hydroxy- or 3-C1-C4 alkoxyphenyl)-cyclohexane-3-ones by catalytic hydrogenation in the presence of heterogeneous or homogeneous catalysts, or by using metal hydrides.
    Type: Application
    Filed: February 27, 2009
    Publication date: September 10, 2009
    Applicant: Gruenenthal GmbH
    Inventors: Wolfgang Hell, Oswald Zimmer, Markus Kegel, Olaf Schaefer, Felix Spindler, Anita Schnyder, Urs Siegrist, Detlef Heller, Hans-Joachim Drexler
  • Process for Preparing a Substituted Dimethyl-(3-arylbutyl)amine Compound by Homogeneous Catalysis
    Publication number: 20090043132
    Abstract: Compounds of the formula II can be hydrogenated to the corresponding butane derivatives in the presence of homogeneous cataslysts composed of metal salts or complexes containing metals selected from the group consisting of Rh, Ir, and Ru and preferably containing diphosphine ligands, with, in addition, excellent optical yields being achieved when one of R2 and R3 is not a hydrogen atom and the diphosphine ligand is chiral.
    Type: Application
    Filed: May 1, 2008
    Publication date: February 12, 2009
    Applicant: Gruenenthal GmbH
    Inventors: Wolfgang Hell, Markus Kegel, Helmut Buschmann, Felix Spindler, Detlef Heller, Hans-Joachin Drexler
  • Process for the preparation of substituted 3-aryl-butylamine compounds
    Patent number: 7417170
    Abstract: Methods for the dehydration of substituted 1-amino-3-aryl-butan-3-ol compounds for the preparation of substituted 3-aryl-butyl-amine compounds.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: August 26, 2008
    Assignee: Gruenenthal GmbH
    Inventors: Wolfgang Hell, Markus Kegel, Bernhard Akteries, Helmut Buschmann, Jorg Holenz, Harmut Loebermann, Detlef Heller, Hans-Joachim Drexler, Stefan Gladow
  • N-phenyl-pyrrol bisphosphane compounds and the metal complexes of the same
    Patent number: 7109346
    Abstract: N-Phenylpyrrolebisphosphines of the formula I metal complexes of these N-phenylpyrrolebisphosphines and their use in metal-catalyzed reactions.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: September 19, 2006
    Assignee: OXENO Olefinchemie GmbH & Co. KG
    Inventors: Matthias Beller, Ralf Jackstell, Holger Klein, Detlef Heller, Hans-Joachim Drexler, Klaus-Diether Wiese, Dirk Roettger
  • Process for the preparation of substitued 3-aryl-butylamine compounds
    Publication number: 20060194988
    Abstract: Methods for the dehydration of substituted 1-amino-3-aryl-butan-3-ol compounds for the preparation of substituted 3-aryl-butyl-amine compounds.
    Type: Application
    Filed: December 6, 2005
    Publication date: August 31, 2006
    Inventors: Wolfgang Hell, Markus Kegel, Berhard Akteries, Helmut Buschmann, Joerg Holenz, Harmut Loebermann, Detlef Heller, Hans-Joachim Drexler, Stefan Gladow
  • Novel n-phenyl-pyrrol bisphosphane compounds and the metal complexes of the same
    Publication number: 20040116713
    Abstract: N-Phenylpyrrolebisphosphines of the formula I 1
    Type: Application
    Filed: January 20, 2004
    Publication date: June 17, 2004
    Inventors: Matthias Beller, Ralf Jackstell, Holger Klein, Detlef Heller, Hans-Joachim Drexler, Klaus-Diether Wiese, Dirk Rottger
  • Process for synthesis of enantiomerically enriched &bgr;-amino acids
    Patent number: 6492544
    Abstract: 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: Grant
    Filed: January 11, 2002
    Date of Patent: December 10, 2002
    Assignee: Degussa AG
    Inventors: Hans-Peter Krimmer, Karlheinz Drauz, Jutta Lang, Armin Boerner, Detlef Heller, Jens Holz
  • Process for synthesis of enantiomerically enriched beta-amino acids
    Publication number: 20020128509
    Abstract: 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) 1
    Type: Application
    Filed: January 11, 2002
    Publication date: September 12, 2002
    Applicant: DEGUSSA AG
    Inventors: Hans-Peter Krimmer, Karlheinz Drauz, Jutta Lang, Armin Boerner, Detlef Heller, Jens Holz