نتایج جستجو برای: hydrogen atom transfer
تعداد نتایج: 464074 فیلتر نتایج به سال:
A single nickel or cobalt atom anchored pyridyl-functionalized conjugated microporous polymer promoted the photogenerated electron transfer, offering efficient hydrogen evolution performance under visible-light irradiation.
The excited-state hydride release from 10-methyl-9-phenyl-9,10-dihydroacridine (PhAcrH) was investigated using steady-state and time-resolved UV/vis absorption spectroscopy. Upon excitation, PhAcrH is oxidized to the corresponding iminium ion (PhAcr(+)), while the solvent (acetonitrile/water mixture) is reduced (52% of PhAcr(+) and 2.5% of hydrogen is formed). The hydride release occurs from th...
The direct dehydrogenation of alkanes is among the most efficient ways to access valuable alkene products. Although several catalysts have been designed promote this transformation, they unfortunately found limited applications in fine chemical synthesis. Here, we report a conceptually novel strategy for catalytic, intermolecular using ruthenium catalyst. combination redox-active ligand and ste...
The stereochemistry and mechanisms of hydrogen-transfer reactions catalyzed by the Pseudomonas aeruginosa pyridine nucleotide transhydrogenase have been investigated. In the presence of specific tritimn-labeled pyridine nucleotides, the Pseudomonas transhydrogenase is able to catalyse a direct hydrogen transfer between the reduced and the oxidized pyridine nucleotides. The reduction of DPNf inv...
A novel mechanism for cleavage of three typical α(1→2), α(1→4) and β(1→4) glucosidic bonds induced by hydroxyl free radical was examined with DFT theory at B3LYP/6-31+G(d,p) level using PCM water solvent model. It was found that the hydrogen abstraction from the CH bonds outside the saccharide rings could induce the hydrogen transfer from the hydroxyl at the radical carbon to the oxygen atom of...
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