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:
Mar. 05, 1991
Filed:
Apr. 12, 1989
Applicant:
Inventor:
Jurgen Kaschig, Freiburg, DE;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556137 ;
Abstract
Optically active iridium complex of the formula I ##STR1## in which the >CH--CH< group contains at least one chiral C atom, R.sup.1 and R.sup.2 together are unsubstituted or C.sub.1 -C.sub.4 -alkyl substituted --(CH.sub.2).sub.4 -- or R.sup.1 is alkyl, unsubstituted or C.sub.1 -C.sub.4 -alkyl substituted, cycloalkyl, aryl, or aralkyl or alkaralkyl and R.sup.2 is H, X.sup.- is the anion of a monobasic inorganic or organic acid, and Y and Z are each ethylene or Y and Z together are an acyclic or cyclic diene having 6 to 10 c atoms whose diene groups are bonded via 1 or 2 C atoms, are suitable for use as enantioselective homogeneous catalysts.