Invention Application
- Patent Title: Chiral ligands, transition-metal complexes thereof and uses thereof in asymmetric reactions
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Application No.: US10319093Application Date: 2002-12-13
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Publication No.: US20030163003A1Publication Date: 2003-08-28
- Inventor: Xumu Zhang , Dengming Xiao
- Applicant: The Penn State Research Foundation
- Applicant Address: null
- Assignee: The Penn State Research Foundation
- Current Assignee: The Penn State Research Foundation
- Current Assignee Address: null
- Main IPC: C07C29/52
- IPC: C07C29/52 ; C07F009/28 ; C07F009/02 ; C07F015/00

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 null-substituted-null-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.
Public/Granted literature
- US06828271B2 Chiral ligands, transition-metal complexes thereof and uses thereof in asymmetric reactions Public/Granted day:2004-12-07
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