C1-Symmetric Bisphospine Ligands and Their Use in the Asymmetric Synthesis of Pregabalin
申请人:Bao Jian
公开号:US20090124820A1
公开(公告)日:2009-05-14
Materials and Methods for preparing (S)-(+)-3-(aminomethyl)-5-methyl-hexanoic acid and structurally related compounds via enantioselective hydrogenation of prochiral olefins are disclosed. The methods employ novel chiral catalysts, which include C
1
-symmetric bisphosphine ligands bound to transition metals.