Patents by Inventor Rainer Sturmer

Rainer Sturmer 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).

  • Preparation of optically active phospholanes, their metal complexes and use in asymmetric synthesis
    Patent number: 6043396
    Abstract: 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: Grant
    Filed: June 8, 1998
    Date of Patent: March 28, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Sturmer, Armin Borner, Jens Holz, Gudrun Voss
  • Chiral compounds
    Patent number: 5919961
    Abstract: Chiral compounds of the formula I ##STR1## where the variables are as described in the specification.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: July 6, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Sturmer, Jun Okuda, Kurt Ritter
  • Process for converting the achiral meso form or the racemate of an ansa-metallocene complex or mixtures thereof into one of its enantiomers
    Patent number: 5840950
    Abstract: In a process for converting the achiral meso form or the racemate of an ansa-metallocene complex or a mixture thereof into one of its enantiomers, the conversion is carried out photochemically in the presence of an enantiomerically pure auxiliary reagent.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: November 24, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: David Fischer, Franz Langhauser, Rainer Sturmer, Jurgen Kerth, Gunther Schweier, Hans-Herbert Brintzinger, Katrin Schmidt
  • Optically activate phosphines,their preparation and their metal complexes, and use in asymmetric synthesis
    Patent number: 5723642
    Abstract: Optically active phosphines of the general formula I or II ##STR1## where the variables have the following meanings: X is an optically active terpene radical,R is an unsubstituted or substituted phenyl radical,Y is a bridge member having 1-10 C atoms in the formula In is 1,2 or 3 andm is 0,1 or 2 with the proviso that n+m=3 in the formula IIn is 1 or 2 andm is 0 or 1 with the proviso that n+m=2, their preparation and use are described.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: March 3, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Sturmer, Lothar Laupichler, Paul Knochel, Falk Langer