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. 17, 2004
Filed:
Dec. 31, 2002
Walter Weissensteiner, Mödling, AT;
Thomas Sturm, Vienna, AT;
Felix Spindler, Starrkirch-Wil, CH;
Solvias AG, Basel, CH;
Abstract
Compounds of the formula (I) and (Ia) in the form of racemates, mixtures of diastereomers or in essentially enantiomerically pure form, (I), (Ia), where R is hydrogen, C -C alkyl, C -C cycloakyl, phenyl or phenyl substituted by from 1 to 3 C -C alky or C -C alkoxy groups; n is 0 or an integer from 1 to 4 and R are identical or different substituents selected from the group consisting of C -C alkyl, C -C fluoroalkyl and C -C alkoxy; X and X are each, independently of one another, secondary phosphino; T is C -C arylene or C -C heteroarylene; and X is bound in the ortho position relative to the T-cyclopentadienyl bond. The compounds are ligands for complexes of metal selected from transition groups (I) and (VIII) of the Periodic Table of the Elements, and these metal complexes are valuable catalysts for the asymmetric addition of hydrogen, boron hydrides or silanes onto carbon-carbon or carbon-heteroatom multiple bonds in prochiral organic compounds or the asymmetric addition of carbon nucleophiles or amines onto allyl compounds.