Invention Grant
US06828271B2 Chiral ligands, transition-metal complexes thereof and uses thereof in asymmetric reactions 有权
手性配体,其过渡金属络合物及其在不对称反应中的用途

  • Patent Title: Chiral ligands, transition-metal complexes thereof and uses thereof in asymmetric reactions
  • Patent Title (中): 手性配体,其过渡金属络合物及其在不对称反应中的用途
  • Application No.: US10319093
    Application Date: 2002-12-13
  • Publication No.: US06828271B2
    Publication Date: 2004-12-07
  • Inventor: Xumu ZhangDengming Xiao
  • Applicant: Xumu ZhangDengming Xiao
  • Main IPC: B01J3118
  • IPC: B01J3118
Chiral ligands, transition-metal complexes thereof and uses thereof in asymmetric reactions
Abstract:
Chiral ligands and transition metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The chiral ligands include phospholanes, P,N ligands, N,N ligands, biphenols, and chelating phosphines. The ferrocene-based irridium (R,R)-f-binaphane complex reduces imines to the corresponding amines with 95-99.6% enantioselectivity and reduces &bgr;-substituted-&agr;-arylenamides with 95% enantioselectivity. The transition metal complexes of the chiral ligands are useful in asymmetric reactions such as asymmetric hydrogenation of imines, asymmetric hydride transfer reactions, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, allylic alkylation, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition and epoxidation reactions.
Information query
Patent Agency Ranking
0/0