Activation of hydrogen peroxide by ionic liquids: mechanistic studies and application in the epoxidation of olefins.

@article{Markovits2013ActivationOH,
  title={Activation of hydrogen peroxide by ionic liquids: mechanistic studies and application in the epoxidation of olefins.},
  author={Iulius I. E. Markovits and Wilhelm A Eger and Shuang Yue and Mirza Cokoja and Christian J M{\"u}nchmeyer and Bo Zhang and Ming-Dong Zhou and Alexander Genest and J{\'a}nos Mink and Shu-liang Zang and Notker R{\"o}sch and Fritz E K{\"u}hn},
  journal={Chemistry},
  year={2013},
  volume={19 19},
  pages={5972-9}
}
Imidazolium-based ionic liquids that contain perrhenate anions are very efficient reaction media for the epoxidation of olefins with H2O2 as an oxidant, thus affording cyclooctene in almost quantitative yields. The mechanism of this reaction does not follow the usual pathway through peroxo complexes, as is the case with long-known molecular transition-metal catalysts. By using in situ Raman, FTIR, and NMR spectroscopy and DFT calculations, we have shown that the formation of hydrogen bonds… CONTINUE READING