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Application of metalloporphyrins and methylviologen-pendent iron porphyrin to reduction of diphenylsulfoxide |
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| Authors: | Hiroaki Koga Takeyuki Arai Taisuke Hamada Shigeyoshi Sakaki |
| Affiliation: | a Department of Industrial Science, Graduate School of Science and Engineering, Kumamoto, University, Kumamoto 860-8555, Japan b Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, Kumamoto 860-8555, Japan c Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan |
| Abstract: | In the two-electron reduction of diphenylsulfoxide to diphenylsulfide, which is considered a model reaction of sulfite reduction catalyzed by sulfite reductase, methylviologen-pendent iron(III) porphyrin exhibits much higher catalytic activity than usual iron(III) and manganese(III) tetraphenylporphyrins, while cobalt(II) tetraphenylporphyrin exhibits much less catalytic activity than the others. Discussion about the active species and the reason of the acceleration by methylviologen-pendent is presented. |
| Keywords: | Model of sulfite reductase Methylviologen-pendent Metalloporphyrin Diphenylsulfoxide Two-electron reduction |
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