Patent ID: 7906669

Claim:
A metallocene-based phosphine ligand for use in enantioselective catalysis, the ligand having the Formula: wherein: M is a metal; Z is P; L is a linker; R 1 is selected from substituted and unsubstituted, branched- and straight-chain alkyl, alkoxy, alkylamino, substituted and unsubstituted cycloalkyl, substituted and unsubstituted cycloalkoxy, substituted and unsubstituted cycloalkylamino, substituted and unsubstituted carbocyclic aryl, substituted and unsubstituted carbocyclic aryloxy, substituted and unsubstituted heteroaryl, substituted and unsubstituted heteroaryloxy, substituted and unsubstituted carbocyclic arylamino and substituted and unsubstituted heteroarylamino, wherein the heteroatom is independently selected from sulphur, nitrogen, and oxygen; X* is selected from: wherein R, R 2 and R 3 are independently selected from substituted and unsubstituted, branched- and straight-chain alkyl, substituted and unsubstituted cycloalkyl, substituted and unsubstituted carbocyclic aryl, and substituted and unsubstituted heteroaryl wherein the heteroatom is independently selected from sulphur, nitrogen, or oxygen.