Highly Stereoselective Epoxidation with H<sub>2</sub>O<sub>2</sub> Catalyzed by Electron-Rich Aminopyridine Manganese Catalysts
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Abstract
Fast, efficient, and highly stereoselective epoxidation with H<sub>2</sub>O<sub>2</sub> is reached by manganese coordination complexes with e-rich aminopyridine tetradentate ligands. It is shown that the electronic properties of these catalysts vary systematically with the stereoselectivity of the O-atom transfer event and exert fine control over the activation of hydrogen peroxide, reducing the amount of carboxylic acid co-catalyst necessary for efficient operation