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Epoxidations catalyzed by an ionic manganese(III) porphyrin and characterization of manganese(V, IV)-oxo porphyrin complexes by UV-vis spectrophotometer in ionic liquid solution

  • Hong Jiao Zhang
  • , Ye Liu*
  • , Yong Lu
  • , Xiao Shuang He
  • , Xia Wang
  • , Xia Ding
  • *此作品的通讯作者
  • East China Normal University

科研成果: 期刊稿件文章同行评审

摘要

An ionic metalloporphyrin of manganese tetrakis-(4-N-trimethylaminophenyl)porphyrin hexafluorophosphate ([MnIIITTMAPP][PF6]5, 1c), resided in the mixed ionic liquids (ILs) of [BzMIM]BF4 and [BMIM]BF4, proved to be an efficient and recyclable catalytic system for styrene (derivative) epoxidations without the involvement of the auxiliary axial ligands. The epoxidation rate in 1c-IL could be dramatically promoted by addition of water. In the built-up 1c-IL-H2O system, the active manganese(V)-oxo porphyrin intermediate (1d, 444 nm) was stabilized to facilitate its detection by a UV-vis spectrophotometer. And the formation of the μ-oxo Mn(IV) porphyrin dimer (1e, 416 nm) was completely suppressed due to the counteraction between 1c and the IL.

源语言英语
页(从-至)80-86
页数7
期刊Journal of Molecular Catalysis A: Chemical
287
1-2
DOI
出版状态已出版 - 15 5月 2008

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