98716-00-8Relevant articles and documents
A selective stepwise heme oxygenase model system: An iron(IV)-oxo porphyrin π-cation radical leads to a verdoheme-type compound via an isoporphyrin intermediate
Garcia-Bosch, Isaac,Sharma, Savita K.,Karlin, Kenneth D.
, p. 16248 - 16251 (2013)
The selective oxidation of the α-position of two heme-Fe III tetraarylporphryinate complexes occurs when water(hydroxide) attacks their oxidized Cmpd I-type equivalents, high-valent FeIV=O π-cation radical species ((P+?)FeIV=O). Stepwise intermediate formation occurs, as detected by UV-vis spectroscopic monitoring or mass spectrometric interrogation, being iron(III) isoporphyrins, iron(III) benzoyl-biliverdins, and the final verdoheme-like products. Heme oxygenase (HO) enzymes could proceed through heterolytic cleavage of an iron(III)-hydroperoxo intermediate to form a transient Cmpd I-type species.
Hydrogen atom abstraction and hydride transfer reactions by iron(IV)-oxo porphyrins
Jeong, Yu Jin,Kang, Yaeun,Han, Ah-Rim,Lee, Yong-Min,Kotani, Hiroaki,Fukuzumi, Shunichi,Nam, Wonwoo
, p. 7321 - 7324 (2009/04/13)
(Chemical Equation Presented) True identity revealed: The C-H bond activation of alkyl aromatics by synthetic iron(IV)-oxo porphyrin species and the hydride transfer of NADH analogues to them occur through H-atom abstraction and proton-coupled electron-transfer mechanisms, respectively. Mechanistic studies revealed that iron(IV)-oxo porphyrin π, not iron(IV)-oxo porphyrin pradical cations, are the true oxidant.
Copper-Dioxygen Reactivity Involved in the Formation of μ-oxoIII-O-CuIIL>+ Heterodinuclear Complexes (por = porphyrinate, L = tetradentate ligand), and Novel Synthesis of Square-Planar FeII(por) Species
Nanthakumar, Alaganandan,Fox, Stephen,Karlin, Kenneth D.
, p. 499 - 501 (2007/10/02)
In the reaction of FeII(por) species with I(MeCN)>+ and O2 to give μ-oxoIII-O-CuIIL>+ 3 (por = porphyrinate, L = tetradentate ligand), copper-dioxygen adducts or their decomposition products must be present, otherwise III-OH> or III-O-FeIII(por)> products appear; a novel synthesis of square-planar FeII(por) is also described.