不同价态Mn(Ⅱ,Ⅲ,Ⅴ)催化的烯烃环氧化反应研究进展

Research Progress on Epoxidation of Olefins Catalyzed by Mn(Ⅱ,Ⅲ,Ⅴ) in Different Valence States

在过去的十多年中,由过渡金属(Cr,Ni,Co,Ru,Mn)参与催化的烯烃环氧化反应受到人们的大量关注,制备的环氧化物中间体被广泛应用于医药、农药以及精细化学品的合成.相比其它过渡金属,Mn及其配合物催化剂具有廉价、环境友好、化学稳定性高、催化效率高等优点.综述了不同氧化价态的Mn(Ⅱ,Ⅲ,Ⅴ)与不同NXOY配体形成的催化剂,在不同的氧化剂/助催化剂参与下高效催化烯烃环氧化反应的研究现状,同时,对不同价态的Mn催化剂参与烯烃环氧化过程以及活性氧中间体如何将氧转移给烯烃的机理进行讨论.

The epoxidation catalyzed by transition metals （Cr, Ni, Co, Ru, Mn） has been received widespread attention over the past decades, and the corresponding epoxides are widely used in the synthesis of pharmaceuticals, fine chemicals and pesticides. Compared to other transition metals, metal Mn catalyst has been widely used in organic synthesis due to its inexpensive, environment-friendly, chemical stability and high catalytic activity. This paper reviews the recent progress on epoxidation of olefins catalyzed by the catalysts which were formed by the reaction of different valence metal Mn（II, III, and V） and dif- ferent NxOy ligands in different oxidants/co-catalyst systems. At the same time, the Mn catalysts with different valence states are involved in the process of the epoxidation of olefins and the mechanism of how to transfer the oxygen of reactive intermediates to the olefins was discussed.