Patent ID: 6624248
Filing Date: 2003-09-23
Classification: B01J,C07B,C08F

Abstract:
A ligand, comprising:a molecular weight-enlarged, homogeneously soluble ligand which comprises: a molecular weight enlarging polymer; and one or more ligands; wherein said one or more ligands are homochiral active centers of bis(3,4-diarylphosphinyl)pyrrolidine; wherein said one or more ligands are bound to said molecular weight enlarging polymer via a linker selected from the group consisting of formulae a)-g) a) â€”Si(R2)â€”; b) â€”(SiR2â€”O)nâ€”, wherein n=1-10000; c) â€”(CHRâ€”CHRâ€”O)nâ€”, wherein n=1-10000; d) â€”(X)nâ€”, wherein n=1-20; e) Zâ€”(X)nâ€”, wherein n=0-20; f) â€”(X)nâ€”W, wherein n=0-20; g) Zâ€”(X)nâ€”W, wherein n=0-20; wherein R represents H, (C1-C8) alkyl, (C6-C18) aryl, (C7-C19) aralkyl, or ((C1-C8) alkyl)1-3-(C6-C18) aryl; X represents (C6-C18) arylene, (C1-C8) alkylene, (C1-C8) alkenylene, ((C1-C8) alkyl)1-3-(C6-C18) arylene, or (C7-C19) aralkylene; Z represents C(&boxH;O)Oâ€”, C(&boxH;O)NHâ€”, C(&boxH;O)â€”, NR, O, CHR, CH2, C&boxH;S, S or PR, wherein Z is further bound directly to said molecular weight enlarging polymer; and W represents C(&boxH;O)Oâ€”, C(&boxH;O)NHâ€”, C(&boxH;O)â€”, NR, O, CHR, CH2, C&boxH;S, S or PR, wherein W is further bound directly to said ligand; or said one or more ligands are bound directly to said molecular weight-enlarging polymer; wherein the molecular weight enlarging polymer is a member selected from the group consisting of polyacrylates, polyvinylpyrrolidinones, polysiloxanes, polybutadienes, polyisoprenes, polyalkanes, polystyrenes, polyoxazolines and mixtures thereof.