Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2011-06-14
2011-06-14
Andres, Janet L. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C549S400000, C549S401000, C549S402000, C549S403000, C549S404000, C549S405000, C549S406000
Reexamination Certificate
active
07960573
ABSTRACT:
A method for preparing an enantiomeric chromane, by asymmetrically hydrogenating a chromene compound in the presence of an Ir catalyst having a chiral ligand. The method includes the enantioselective preparation of enantiomeric equol. A preferred Ir catalyst has a chiral phosphineoxazoline ligand. Enantiomeric chromanes of high stereoselective purity can be obtained.
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Setchell Kenneth David Reginald
Sorokin Victor Dmitrievich
Andres Janet L.
Children's Hospital Medical Center
Covington Raymond
Girindus America, Inc.
Rothwell, Figg Ernst & Manbeck, PC
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