Synthesis and Characterization of a novel Ruthenium(II) Complex With Bidentate O,N-donor OxazolineLigand and Study of Catalytic Oxidation of Sulfides and Alkanes

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Hosseini, Mojtaba | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 42113 (03)
University: Sharif University of Technology
Department: chemistry
Advisor(s): Bagherzadeh, Mojtaba
Abstract:
The 2-(2′-hydroxyphenyl)-oxazoline ligand (Hphox) is generated from 1:1 condensation of methyl salicylate with 2-aminoethanol. Novel [Ru(Hphox)2(H2O)2] (Hphox = 2-(2′-hydroxyphenyl)-oxazoline ) complex has been synthesized and characterized by physic-chemical methods. Oxidation of sulfides catalyzed by the mixed-ligand ruthenium(II) complex [Ru(Hphox)2(H2O)2]using urea-hydrogen peroxide (UHP) as oxidant was investigated under mild condition within 1 h. The results showed that mixed-ligand ruthenium(II) complex was effective catalyst in oxidation of sulfides in whichsulfoxideswere the only products. Using this catalytic system in the oxidation of alkanes, ketones were obtained as the main products, together with variable amounts of alcohols, depending on the nature of the substrate. In sulfide oxidation the conversion for methylphenyl sulfide as substrate was perfect(100%) and also in oxidation of alkanes the conversion for cyclohexane was 92% with 89% selectivity to ketones.
Keywords:
Catalytic Oxidation ; Oxazoline ; Ruthenium ; Tertiary Butylhydroperoxide (TBHP) ; Urea-Hydrogen Peroxide

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