2-Substituted and 4-substituted aryl nitrone compounds
申请人:Kelly G. Michael
公开号:US20050182060A1
公开(公告)日:2005-08-18
The present invention provides aryl nitrones, compositions comprising the same and methods of their use for the treatment or prevention of oxidative, ischemic, ischemia/reperfusion-related and chemokine mediated conditions.
Visible-Light-Driven Oxidation of Organic Substrates with Dioxygen Mediated by a [Ru(bpy)<sub>3</sub>]<sup>2+</sup>/Laccase System
作者:Ludovic Schneider、Yasmina Mekmouche、Pierre Rousselot-Pailley、A. Jalila Simaan、Viviane Robert、Marius Réglier、Ally Aukauloo、Thierry Tron
DOI:10.1002/cssc.201500602
日期:2015.9.21
Oxidation reactions are highly important chemical transformations that still require harsh reaction conditions and stoichiometric amounts of chemical oxidants that are often toxic. To circumvent these issues, olefins oxidation is achieved in mild conditions upon irradiation of an aqueous solution of the complex [Ru(bpy)3]2+ and the enzyme laccase. Epoxide formation is coupled to the light‐driven reduction
Chemical and photochemical oxidation of organic substrates by ruthenium aqua complexes with water as an oxygen source
作者:Fei Li、Miao Yu、Yi Jiang、Fang Huang、Yanqing Li、Biaobiao Zhang、Licheng Sun
DOI:10.1039/c1cc12558c
日期:——
Two ruthenium aqua complexes were shown to be effective catalysts in chemical and photochemical oxidation of hydrocarbons. A remarkable activity (up to 90% yield and 100% selectivity) was performed in conversion of sulfide to sulfoxide by homogeneous photooxidation.
electron shuttle to oxidatively quench the photosensitizer, [Ru(bpy)3 ]2+ , generating the highly oxidized chromophore and the powerful reductant methyl-viologen radical MV+. . MV+. can then reduce an iron(III) catalyst to the iron(II) form and concomitantly O2 to O2 .- in an aqueous medium to generate an active iron(III)-(hydro)peroxospecies. The oxidized photosensitizer is reset to its ground state by oxidizing
Photocatalytic Oxidation of Organic Compounds in Water by Using Ruthenium(II)-Pyridylamine Complexes as Catalysts with High Efficiency and Selectivity
作者:Shingo Ohzu、Tomoya Ishizuka、Yuichirou Hirai、Shunichi Fukuzumi、Takahiko Kojima
DOI:10.1002/chem.201203430
日期:2013.1.28
The photocatalyticoxidation of organic substrates such as alcohols was conducted in the presence of RuII–aqua complexes as oxidation catalysts, [RuII(bpy)3]2+ as a photosensitizer and electron mediator, and a CoIII complex as a sacrificial oxidant (see scheme). The catalytic systems exhibited high efficiency to achieve turnover numbers of over 8000.