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. 23, 1988
Filed:
Dec. 09, 1987
Applicant:
Inventors:
Noboru Sayo, Kanagawa, JP;
Takanao Taketomi, Chiba, JP;
Hidenori Kumobayashi, Kanagawa, JP;
Susumu Akutagawa, Kanagawa, JP;
Assignee:
Takasago International Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556 21 ; 556 23 ;
Abstract
A ruthenium-phosphine complex represented by formula (I): ##STR1## wherein R represents a hydrogen atom, a methyl group, or a methoxy group; and X represents ClO.sub.4, BF.sub.4, or PF.sub.6. The ruthenium-phosphine complex is inexpensive and exhibits excellent performance as a catalyst for various organic syntheses, particularly for asymmetric hydrogenation.