217640-41-0Relevant academic research and scientific papers
Dirhodium(II) tetrakis[N-tetrachlorophthaloyl-(S)-tert-leucinate]: A new chiral Rh(II) catalyst for enantioselective amidation of C-H bonds
Yamawaki, Minoru,Tsutsui, Hideyuki,Kitagaki, Shinji,Anada, Masahiro,Hashimoto, Shunichi
, p. 9561 - 9564 (2002)
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.
Catalysts for use in enantioselective synthesis
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Page/Page column 57; 62-63, (2008/12/05)
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 tetracarboxylates derived from adamantylglycine as chiral catalysts for enantioselective C-H aminations
Reddy, Ravisekhara P.,Davies, Huw M. L.
, p. 5013 - 5016 (2007/10/03)
(Chemical Equation Presented) The dirhodium tetracarboxylate, Rh 2(S-TCPTAD)4, derived from adamantylglycine, is an effective chiral catalyst for both inter- and intramolecular C-H aminations.
Rhodium(II)-catalyzed nitrene transfer with phenyliodonium ylides
Mueller, Paul,Baud, Corine,Naegeli, Ivo
, p. 597 - 601 (2007/10/03)
The [Rh2(OAc)4]-catalyzed decomposition of NsN=IPh {[N-(p-nitrobenzenesulfonyl)imino]phenyl-iodinane} affords aziridines in the presence of olefins and insertion products with compounds having activated CH bonds. The aziridination is stereospecific, and the insertion proceeds with retention of configuration. With chiral Rh(II) complexes, enantioenriched products result. A one-step mechanism involving a metal-complexed nitrene is proposed for both reactions.
