IRREVERSIBLE REDOX REARRANGEMENT OF DIOXYGEN COMPLEXES. I. SELECTIVE OXIDATION OF DIPEPTIDES COORDINATED TO COBALT(II)

Abstract

The decomposition of the cobalt dioxygen complexes of three dipeptides has been investigated by removal of the metal from the final reaction mixtures, followed by gas chromatographic and mass spectrometric analyses of the organic reaction products. The results indicate that the reaction involves the oxidation of coordinated dipeptide, and that the ligands are oxidized exclusively at the N-terminal amino acid residue.