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Allylic oxdation of alkenes with molecular oxygen catalyzed by porous coordination polymers Fe-MIL-101 and Cr-MIL-101 |
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| Authors: | I Yu Skobelev K A Kovalenko V P Fedin A B Sorokin O A Kholdeeva |
| Institution: | 1. Boreskov Institute of Catalysis, Novosibirsk, 630090, Russia 2. Institut de Recherches sur la Catalyse et l’Environnement de Lyon (IRCELYON), UMR 5256, CNRS-Universite-Lyon 1, 2, av. A. Einstein, 69626, Villeurbanne Cedex, France 3. Nikolaev Institute of Inorganic Chemistry, Novosibirsk, 630090, Russia |
| Abstract: | The catalytic performances of Cr-MIL-101 and Fe-MIL-101 porous coordination polymers have been investigated in the allylic oxidation of alkenes, including natural terpenes, with molecular oxygen (1 atm) under mild solvent-free conditions. Both catalysts remain stable under optimal conditions (40°C for Fe-MIL-101 and 60°C for Cr-MIL-101) and can be recycled, at least, four times without loss of the catalytic properties. Fe-MIL-101 favours the formation of unsaturated alcohols, while Cr-MIL-101 mediates the formation of unsaturated ketones. The oxidation process involves the formation of alkene hydroperoxide via conventional radical chain process and its further transformations over the MIL-101 catalysts. The mechanism of the hydroperoxide transformation strongly depends on the metal nature. |
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