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Metal complex amino acid synthons: syntheses, structures and stereoselective reactions of (iminoacetato)cobalt(III) complexes.

Bendahl, Lars; Hammershoi, Anders; Jensen, Dan; Larsen, Sine; Riisager, Anders; Sargeson, Alan; Sorensen, Henning


Amino acid anions (AAO-) chelated to cobalt(III) in [(en)2Co(AAO)](O3SCF3)2 (AA = Gly, Sar, Ala and Glu) were selectively oxidized to their imine derivatives by a new general procedure utilizing PBr3 and N-bromosuccinimide in dmf. The new iminoacetato complexes, Λ- and Δ-[(en)2Co(O2CCH=NH)](O3SCF 3)2, constitute chiral glycine equivalents which can serve as synthons for stereoselective α-amino acid synthesis. In alkaline EtOH, quantitative addition of CH2(COMe)2, CH2(CO2Et)2 or MeCOCH2CO2Et to...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Dalton Transactions


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