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:
May. 20, 2008
Filed:
Dec. 10, 2004
Matthias Lotz, Basel, CH;
Martin Kesselgruber, Basel, CH;
Marc Thommen, Nuglar, CH;
Benoît Pugin, Münchenstein, CH;
Matthias Lotz, Basel, CH;
Martin Kesselgruber, Basel, CH;
Marc Thommen, Nuglar, CH;
Benoît Pugin, Münchenstein, CH;
Solvias A.G., Basel, CH;
Abstract
The invention relates to compounds of formula (I) provided in the form of racemic compounds, mixtures of diastereomers or essentially pure diastereomers, wherein Rrepresents a hydrogen atom or C-C-alkyl, and at least one secondary phosphine depicts an unsubstituted or substituted cyclic phosphine group, or phosphonium salts thereof having one or two monovalent anions or a divalent anion. The compounds of formula (I) can be obtained by means of a novel method and are valuable ligands for catalytically active metal complexes in asymmetrical synthesis