title: Ultrasound and ionic liquid: an efficient combination to tune the mechanism of alkenes epoxidation.
abstract: In this proof of concept study, the advantageous properties of both H(2)O(2)/NaHCO(3)/imidazole/Mn(TPP)OAc oxidation system and MOPyrroNTf(2) ionic liquid have been combined under ultrasonic irradiation to give an exceptionally favorable environment for Mn(TPP)OAc catalyzed olefin oxidations. The results reveal the crucial role played by the ultrasonic irradiations that influence drastically the oxidation process. In MOPyrroNTf(2) and under ultrasonic irradiation, the mechanism probably involves an oxo-manganyl intermediate at the expense of the classical bicarbonate-activated peroxide route.
authors: Laboratoire de Chimie Moléculaire et Environnement, Université de Savoie, CISM, Campus scientifique, Le Bourget du Lac Cedex 73376, France.
authors: Gregory
authors: G
authors: Chatel
authors: Catherine
authors: C
authors: Goux-Henry
authors: Nathalie
authors: N
authors: Kardos
authors: Joel
authors: J
authors: Suptil
authors: Bruno
authors: B
authors: Andrioletti
authors: Micheline
authors: M
authors: Draye
mesh_terms: D000475:Alkenes / Q000737:chemistry* / Q000528:radiation effects*; D004852:Epoxy Compounds / Q000737:chemistry* / Q000528:radiation effects*; D019220:High-Energy Shock Waves; D052578:Ionic Liquids / Q000737:chemistry* / Q000528:radiation effects*; D011829:Radiation Dosage; D013010:Sonication / Q000379:methods*
chemical_list: D000475:Alkenes; D004852:Epoxy Compounds; D052578:Ionic Liquids