Homogeneous oxidation catalysis using metal complexes

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 33/03 (2006.01) B01J 31/18 (2006.01) B01J 31/22 (2006.01) C07B 53/00 (2006.01) C07C 29/48 (2006.01) C07C 29/56 (2006.01) C07C 33/042 (2006.01)

Patent

CA 2295006

The present method provides a method of transferring oxygen to at least one oxidizable site on a target compound. The method includes the steps of selectively oxidizing an oxidizable site on a target compound by reacting in solution: the target compound, a source of oxygen atoms, a source of a Lewis acid, such as a proton, alkali, alkaline earth, rare earth, transition metal or main group metal ion, and a catalyst. The catalyst has general structure (I) wherein Z is preferably N, but may include O and MO is a transition metal- oxo species. The Lewis acid binds to a bidentate secondary site on the Ch1 substituent to form a Lewis acid-catalyst complex.

Cette invention se rapporte à un procédé servant à transférer de l'oxygène vers un site oxydable au moins sur un composé cible. Ce procédé consiste à oxyder sélectivement un site oxydable sur un composé cible, en faisant réagir en solution: le composé cible, une source d'atomes oxygène, une source d'un acide de Lewis, telle qu'un proton, un ion de métal alcalin, de métal alcalino-terreux, de métal de terres rares, de métal de transition ou de métal de goupe principal, ainsi qu'un catalyseur. Ce catalyseur présente la structure générale (I), dans laquelle Z représente de préférence N mais peut inclure O, et MO représente une espèce oxo-métal de transition. L'acide Lewis se lie à un site secondaire bidenté sur le substituant Ch¿1?, afin de former un complexe catalyseur acide de Lewis.

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