Three metallo-benzoylbiliverdins were synthesized in 60−87% yields from oxidation of dodeca-substituted porphyrins with NaNO2/TFA and air or by reaction with mCPBA/pyridine and air. The X-ray structures of two of the complexes and the electrochemistry of the three metallo-benzoylbiliverdins are discussed.
The high-yield preparation of metallo-benzoylbiliverdins 9, 10, and 11 from either oxidation of dodeca-substitutedporphyrin 6 in the presence of NaNO2/TFA and air followed by metalation or by reaction of the Ni(II) or Cu(II)complexes of 6 with m-chloroperoxybenzoic acid in pyridine under air is reported. The X-ray structures of complexes9 and 10 and the electrochemistry and spectroelectrochemistry of metallo-benzoylbiliverdins 9−11 are presentedand discussed.