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Highly Stereoselective Epoxidation with H 2 O 2 Catalyzed by Electron-Rich Aminopyridine Manganese Catalysts

2013; American Chemical Society; Volume: 15; Issue: 24 Linguagem: Inglês

10.1021/ol403018x

1523-7060

Olaf Cussó, Isaac Garcia‐Bosch, David Font, Xavi Ribas, Julio Lloret‐Fillol, Miguel Costas,

Metal complexes synthesis and properties

Fast, efficient, and highly stereoselective epoxidation with H2O2 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.