Electrocatalytic oxidation of styrene by a high valent ruthenium porphyrin cation radical

被引：16

作者：

Chen, CY

Cheng, SH ^{[1
]}

Su, YO

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 10764, Taiwan

[2] Natl Chi Nan Univ, Dept Appl Chem, Nantou 545, Hsien, Taiwan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2000年 / 487卷 / 01期

关键词：

electrocatalytic oxidation; styrene; ruthenium porphyrin;

D O I：

10.1016/S0022-0728(00)00153-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A sterically-hindered carbonylruthenium(II) porphyrin Ru-II(CO)(TMP) (where TMP = meso-tetramesitylporphyrinato dianion) has been synthesized. Chemical oxidation of Ru-II(CO)(TMP) by m-chloroperbenzoic acid (m-CPBA) gives the dioxoruthenium(VI) porphyrin (Ru-VI(O)(2)TMP). Cyclic voltammograms show that Ru-VI(O)(2)TMP is reversibly oxidized at E-1/2 = +1.24 V in CH2Cl2. Thin-layer absorption spectra for oxidation of Ru-VI(O)(2)TMP at + 1.32 V indicates that the product is a porphyrin cation radical (Ru-VI(O)(2)TMP+.). Electrogenerated Ru-VI(O)(2)TMP+. reacts selectively with styrene to give phenylacetaldehyde (96%) and benzaldehyde (4%). We report the first case of styrene oxidation by high valent ruthenium porphyrin under electrochemical conditions. An electrocatalytic oxidation reaction scheme is proposed. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：51 / 56

页数：6

共 20 条

[1] ELECTROCHEMICAL AND SPECTRAL STUDIES OF STERICALLY HINDERED WATER-SOLUBLE IRON TETRAKIS(SULFONATOMESITYL)PORPHINE [J].