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. 31, 2012
Filed:
Apr. 11, 2007
Weiping Chen, Liverpool, GB;
Felix Spindler, Starrkirch-Wil, CH;
Benoît Pugin, Münchenstein, CH;
Solviasag, Basel, CH;
Abstract
Compounds of the formula I in the form of enantiomerically pure diastereomers or a mixture of diastereomers, (I), where the radicals Rare identical or different and are each C-C-alkyl; m is 0 or an integer from 1 to 3; n is 0 or an integer from 1 to 4; Ris a hydrocarbon radical or a C-bonded heterohydrocarbon radical; Cp is unsubstituted or C-C-alkyl-substituted cyclopentadienyl; Y is a C-bonded chiral group which directs metals of metallation reagents into the ortho position; and Phos is a P-bonded P(III) substituent. The compounds are chiral ligands for complexes of transition metals which are used as homogeneous catalysts in asymmetric syntheses.