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. 22, 2006
Filed:
Jul. 09, 2004
Applicants:
Albert Sun-chi Chan, Hung Hom, HK;
Liqin Qiu, Hung Hom, HK;
Inventors:
Albert Sun-Chi Chan, Hung Hom, HK;
Liqin Qiu, Hung Hom, HK;
Assignee:
The Hong Kong Polytechnic University, Kowloon, HK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides compounds of the formula wherein The compounds of formula (I) are bridged C-symmetric biphenyldiphosphine analogs and, thus, may be employed as ligands to generate chiral transition metal catalysts which may be applied in a variety of asymmetric reactions. The compounds of the present invention are easily accessible in high diastereomeric and optical purity according to the methods disclosed herein.