WebFeb 15, 2024 · PMS is a derivative of H 2 O 2 where H atom is substituted by SO 3-, with asymmetric structure and O-O bond of 1.453 Å, which can be easily activated to produce reactive radicals. In this work, CNTs-hemin was used in the PMS system to degrade sulfathiazole (STZ), a probe compound, to evaluate the catalytic activity. WebSep 14, 2012 · We have discovered that a manganese porphyrin complex catalyzes alkyl fluorination by fluoride ion under mild conditions in conjunction with stoichiometric oxidation by iodosylbenzene. Simple alkanes, terpenoids, and even steroids were selectively fluorinated at otherwise inaccessible sites in 50 to 60% yield.
Radical Anions of Free‐Base Tetraphenyl‐ and …
WebAug 15, 1989 · The porphyrins were oxidized by several peroxidases (horseradish peroxidase, lactoperoxidase, and myeloperoxidase), yielding the same type of ESR spectra. From these results, we conclude that porphyrins are substrates for peroxidases. The changes in the visible absorbance spectra of the porphyrins during enzymatic oxidation … WebJun 1, 2024 · Homo- and heterobimetallic porphyrin dimers have been synthesized, which, upon 2e-oxidation, produce stable dication diradical species as shown. the outsiders how many pages
Substrate sulfoxidation by a biomimetic cytochrome P450
WebJul 5, 2024 · The radical cations of a family of π-conjugated porphyrin arrays have been investigated: linear chains of N = 1–6 porphyrins, a 6-porphyrin nanoring and a 12-porphyrin nanotube. The radical cations were generated in solution by chemical and electrochemical oxidation, and probed by vis–NIR–IR and EPR spectroscopies. WebApr 1, 2024 · @article{Yanai2024ElectricFE, title={Electric field effect of positive and negative charges of substituents on electronic structure and reactivity of oxoiron(IV) porphyrin $\pi$-cation radical complex.}, author={Kana Yanai and Masahiko Hada and Hiroshi Fujii}, journal={Journal of inorganic biochemistry}, year={2024}, volume={244}, … WebApr 4, 1995 · Recently, the 2 K EPR spectrum of a catalase compound I was found to exhibit a broad signal extending from g perpendicular = 3.45 to g parallel approximately 2 and was interpreted as a porphyrin pi cation radical [Benecky, M. J., et al. (1993) Biochemistry 32, 11929-11933]. On the basis of these comparisons, we conclude that ascorbate ... shurco trailers