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:
Jan. 07, 1992
Filed:
Mar. 08, 1990
Applicant:
Inventors:
Makoto Watanabe, Yokkaichi, JP;
Masaru Uemura, Yokkaichi, JP;
Shuki Araki, Nagoya, JP;
Yasuo Butsugan, Nagoya, JP;
Assignee:
Tosoh Corporation, Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
544 64 ; 546 11 ; 548402 ; 556144 ; 556145 ;
Abstract
A ferrocene derivatives represented by the following formula (I): ##STR1## can be a useful ligand to metals with Lewis acidity and is used as a catalyst for asymmetric synthesis with good enantioselectivety. This ferrocene derivatives is synthesized from a novel haloferrocene derivative represented by formula (II) and the haloferrocene derivative is synthesized from a novel ferrocene derivative represented by formula (III).