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Showing 1 to 10 of 10 for “"Sulfoxidation"”.
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Biokatalytische enantioselektive Sulfoxidation
… auf ihre Fähigkeit zur enantioselektiven Sulfoxidation überprüft wurden. 2. Insgesamt sind sechs Keime nach standardisierten Methoden genotypisch charakterisiert und den entsprechenden Spezies zugeordnet worden. Die beiden Bakterienstämme mit den bei der Sulfoxidation höchsten …
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Kinetic Studies of the Sulfoxidation of Aryl Methyl Sulfides by Trans-Dioxoruthenium(VI) Porphyrin Complexes
… In this project, the kinetics of two-electron sulfoxidation of <i>para</i>-substituted phenyl methyl sulfides to the corresponding sulfoxides with well-characterized <i>trans</i>-dioxoruthenium(VI) porphyrin complexes were studied by rapid stopped-flow spectroscopy. The substituent effect in …
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The development of organic peroxide mediated oxidations
… alkene starting materials and an organocatalytic sulfoxidation procedure using diketones as catalysts.;Chapter 1 describes a novel metal-free method for the one-pot anti-dihydroxylation of alkenes to form diols using malonoyl peroxide 13. The reaction conditions were optimised and the scope of the …
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Selective Catalytic Oxidation of Organic Sulfides by Iron (III) Porphryin Catalysts and Generation of Iron (IV)-OXO Prophyrin Radical Cations
… an excellent conversion and selectivity for the sulfoxidation reactions. Reaction conditions and environments that effect the catalytic sulfoxidation including solvent, catalytic amount, axial ligand, water, and thioanisole substrates, have been investigated to identify the optimal conditions and …
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Selective Oxidations by Metalloporphyrins and Metallocorroles
… are most likely to be the active oxidant in the sulfoxidation reactions. An outstanding method for the highly selective oxidation of sulfides to sulfoxides was developed by using iron(III) corroles (4) and PhI(OAc)<sub>2</sub> as mild oxygen source. Allylic thioanisoles and hydroxy sulfides could …
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Selective Oxidations by Iron(III) Porphyrins and Iron(III) Corroles
… shown excellent activity and selectivity for sulfoxidation reactions. Various reaction conditions and environmental effects were investigated including solvent, axial ligands, water, amounts of oxygen source, and substrate scope. The optimal conditions were determined for iron(III) porphyrin/ …
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Synthesis of Mycobacterial Ergothioneine biosynthetic pathway metabolites
… metabolic studies. Enantioselective sulfoxidation of EgtE enzyme substrate precursor, hercynyl cysteine sulfide gave the required hercynyl cysteine sulfoxide derivative and in same cases the hercynyl cysteine sulfone. Crude enzyme mediated transformation of substrates indicated that …
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Synthesis, Kinetic and Photocatalytic Studies of Porphyrin-Ruthenium-Oxo Complexes
… of high-valent metal-oxo species. Moreover, the sulfoxidation reactions are 3 to 4 orders of magnitude faster than the well-known epoxidation reactions. In addition, several ruthenium porphyrins were used as the catalysts in the competitive oxidation reactions to identify the kinetically …
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A Comparative In Vitro Metabolic Study of Certain Pesticidal Phenyl N-Methyl-Carbamates
… of the carbamate moiety N-methyl groups. Sulfoxidation and hydroxylation were the major routes of metabolism with Mesurol in all three species.</p> <p>The kidney and blood possessed very low hydrolytic and nonhydrolytic metabolic activity.</p>
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Mechanistic Investigations of Hydrogen and Oxygen Atom Transfer Reactions by Manganese-Oxygen Species
… derivatives. The results suggest a common sulfoxidation mechanism for these complexes. Additionally, the rates of oxidation of the para-substituted thioanisole derivatives by the manganese(IV)-oxo complexes are much faster than expected from the Marcus theory of outer-sphere …