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:
Jul. 25, 1989
Filed:
May. 08, 1987
Jurgen Kaschig, Freiburg, DE;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Optically active iridium complexes of the formula I and mixtures of the diastereomers ##STR1## in which R.sup.1 and R' are H and A is a radical of the formula II, IIa or IIb ##STR2## or R.sup.1 and R' represent a bond and A is a radical of the formula IIc ##STR3## in which R.sup.2 is --H or --CH.sub.3, X.sup..crclbar. is an anion of an inorganic or organic acid, Y and Z are each ethylene, or Y and Z together represent an open-chain or cyclic diene having 6-10 C atoms, whose double bonds are separated by one or two C atoms, and R is a hydrocarbon radical having at least one chiral C atom or a hydrocarbon radical having at least one hetero atom and at least one chiral C atom, or A is a radical of the formula II, IIa or IIb and R is phenyl, naphthyl, 2-methylphen-1-yl or 2,6-dimethylphen-1-yl. The complexes are suitable as enantioselective catalysts.