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:
Aug. 26, 2014
Filed:
Nov. 14, 2013
Applicants:
Zhengxu Han, Shrewsbury, MA (US);
Chris Hugh Senanayake, Brookfield, CT (US);
Inventors:
Zhengxu Han, Shrewsbury, MA (US);
Chris Hugh Senanayake, Brookfield, CT (US);
Assignee:
Boehringer Ingelheim International GmbH, Ingelheim am Rhein, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/02 (2006.01); C07F 9/28 (2006.01); C07F 9/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed are methods for making chiral phosphorus ligands including chiral phosphines, chiral phosphine oxides, phosphonamides, and aminophosphines. The chiral phosphorus ligands prepared by the methods of the invention are useful as components of chiral catalysts, e.g., transition metal complexes.