The first manganese N-confused porphyrins catalyzed oxidation of alkene

• Synthesis and characterization of manganese N-methyl N-confused porphyrins (3a–3f).
• First investigation of catalytic activity of Manganese N-confused porphyrins (3a–3f) on styrene oxidation.
• Effect of reaction time, catalyst concentration, solvents and oxidants on styrene oxidation is described.

A series of N-methyl N-confused porphyrin manganese complexes (3a–3f) were synthesized and characterized by UV–vis, XPS, HR-MS and cyclic voltammetry. These complexes were utilized to catalyze the styrene oxidation. It turned out their catalytic activities were comparable with manganese tetraphenylporphyrin (MnTPP). Among all investigated manganese N-confused porphyrins, the most electron deficient 3f exhibited the best catalytic activity for the alkene oxidation. The proposed mechanism for the catalytic oxidation has also been described.

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