The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2009
Filed:
Aug. 01, 2005
Applicants:
Kenneth David Reginald Setchell, Cincinnati, OH (US);
Victor Dmitrievich Sorokin, Cincinnati, OH (US);
Inventors:
Kenneth David Reginald Setchell, Cincinnati, OH (US);
Victor Dmitrievich Sorokin, Cincinnati, OH (US);
Assignees:
Girindus America, Inc., Cincinnati, OH (US);
Children's Hospital Medical Center, Cincinnati, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 311/00 (2006.01);
U.S. Cl.
CPC ...
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.