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. 25, 2014
Filed:
Jun. 09, 2008
Kamaluddin Abdur-rashid, Mississauga, CA;
Rongwei Guo, Mississauga, CA;
Xuanhua Chen, Mississauga, CA;
Wenli Jia, Mississauga, CA;
Kamaluddin Abdur-Rashid, Mississauga, CA;
Rongwei Guo, Mississauga, CA;
Xuanhua Chen, Mississauga, CA;
Wenli Jia, Mississauga, CA;
Kanata Chemical Technologies Inc., Toronto, Ontario, CA;
Abstract
The present application is directed to i) a method for synthesizing aminophosphine (P,N) and phosphine-aminophosphine (P,N,P) ligands, ii) the use of such ligands in the preparation of metal complexes as hydrogenation catalysts, and iii) aminophosphine (P,N) and phosphine-aminophosphine (P,N,P) ligands of various structures. In particular, the methods in i) involve reacting a protected tertiary amine of formula (I) with a metal phosphide of the formula Y—PR8R9 to afford an aminophosphine of formula (II), which can then be optionally further reacted with a phosphine of the formula (III) to afford the phosphine-aminophosphine of formula (IV).