申请人:The Research Foundation of State University of New York
公开号:US07385064B1
公开(公告)日:2008-06-10
Disclosed are compounds having the following formula:
in which Z11 is selected from a substituted or unsubstituted saturated adamantyl or other polycyclic group and a substituted or unsubstituted branched acyclic group containing at least 5 carbon atoms at least one of which is a tertiary carbon; and in which Z12 is a cyclic imide. Methods of using these compounds as chiral catalysts for carbenoid reactions and for enantioselective C—H aminations are also described.
Dirhodium(II) tetrakis[N-tetrachlorophthaloyl-(S)-tert-leucinate], characterized by substitution of chlorine atoms for four hydrogen atoms on the phthalimido group in the parent dirhodium(II) complex has been found to be well suited for enantioselective amidation of benzylic C-H bonds with [(4-nitrophenyl)sulfonylimino]phenyliodinane. The observed enantioselectivity of up to 84% ee is the highest reported to date for dirhodium(II) complex-catalyzed C-H amidations. (C) 2002 Elsevier Science Ltd. All rights reserved.
US7385064B1
申请人:——
公开号:US7385064B1
公开(公告)日:2008-06-10
Dirhodium Tetracarboxylates Derived from Adamantylglycine as Chiral Catalysts for Enantioselective C−H Aminations
作者:Ravisekhara P. Reddy、Huw M. L. Davies
DOI:10.1021/ol061742l
日期:2006.10.1
The dirhodium tetracarboxylate, Rh-2(S-TCPTAD)(4), derived from adamantylglycine, is an effective chiral catalyst for both inter- and intramolecular C-H aminations.