Mechanistic Scientific studies on the Epoxidation of Alkenes by Macrocyclic Manganese Porphyrin Catalysts

[ad_1] Mechanistic Studies on the Epoxidation of Alkenes by Macrocyclic Manganese Porphyrin Catalysts

Ion mobility mass spectrometry reveals that a manganese (III) porphyrin cage reacts with the oxidant iodosylbenzene to type an inside of iodosylbenzene advanced, which is transformed into a manganese(V)oxo complex in which the oxo group is positioned within the cage (still left). It reacts within just the cage with alkenes to variety epoxides. When the cage is blocked by methyl teams the response with iodosylbenzene and the development of the manganese(V)oxo intricate takes place at the outdoors of the cage (correct). Subsequent reaction with alkenes usually takes put at the outdoors.

Abstract

Macrocyclic metal porphyrin complexes can act as form-selective catalysts mimicking the action of enzymes. To realize enzyme-like reactivity, a mechanistic knowledge of the reaction at the molecular degree is required. We report a mechanistic review of alkene epoxidation by the oxidant iodosylbenzene, mediated by an achiral and a chiral manganese(V)oxo porphyrin cage intricate. Each complexes change a good wide variety of alkenes into epoxides in yields varying concerning 20–88�

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