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:
Feb. 03, 2015
Filed:
Jul. 09, 2014
Nizar Haddad, Danbury, CT (US);
BO Qu, Brookfield, CT (US);
Jolaine Savoie, Danbury, CT (US);
Chris Hugh Senanayake, Brookfield, CT (US);
Xudong Wei, Ridgefield, CT (US);
Nizar Haddad, Danbury, CT (US);
Bo Qu, Brookfield, CT (US);
Jolaine Savoie, Danbury, CT (US);
Chris Hugh Senanayake, Brookfield, CT (US);
Xudong Wei, Ridgefield, CT (US);
Boehringer Ingelheim International GmbH, Ingelheim am Rhein, DE;
Abstract
The invention relates to a series of novel chiral nitrogen-phosphorus ligands of formulae (Ia) and (Ib): wherein R-Rand X are as defined herein. The invention also relates to chiral metal complexes prepared with these chiral nitrogen-phosphorus ligands. The chiral metal complexes are useful as catalysts for carrying out asymmetric hydrogenation.