Photoreduction of Iron(III) Tetraphenylporphyrin In Ethanol studied by Laser Flash Photolysis: Effects of Concentrations on Quantum Yields
Chloroiron(III) tetraphenylporphyrin, ClFe(III)TPP, in deaerated ethanol is photoreduced to yield iron(II) tetraphenylporphyrin, Fe(II)TPP, upon irradiation with UV light.The 355nm laser photolysis studies have confirmed that the initial yields for the fo
(Porphinato)iron-catalyzed addition reactions of thiols to alkenes via (σ-alkyl)iron(II) complexes
The Markovnikov-type addition of thiols (derived from the corresponding disulfides) to alkenes occurs in anaerobic benzene-ethanol solutions containing NaBH4 and (porphinato)iron(III) chloride (Por-FeIIICl). For example, the reaction of styrene with diphenyl disulfide affords phenyl 1-phenylethyl sulfide. It has been assumed that the hydride transfer from BH4- to styrene yields 1-phenylethanide which is stabilized by coordinating to Por-FeII and that the resulting (σ-alkyl)iron(II) complex having a carbanion character reacts with diphenyl disulfide to give phenyl 1-phenylethyl sulfide and the thiophenolate ion.
Takeuchi, Masayuki,Shimakoshi, Hisashi,Kano, Koji
p. 1208 - 1213
(2008/10/08)
Photoinduced Decarbonylation from Carbonyliron Tetraphenylporphyrin in Ethanol. Effects of Axial Imidazole Studied by Laser Flash Photolysis
Photochemical reactions of carbonyliron(II) tetraphenylporphyrins, (CO)(L)FeIITPP (L = ethanol and imidazole) and bisimidazoleiron(II) tetraphenylporphyrin, (Im)2FeIITPP, in ethanol were systematically investigated by laser flash pho