A macrocyclic chiral manganese (III) Schiff base complex as an efficient catalyst for the asymmetric epoxidation of olefins

作者：Martinez A; Hemmert C^*; Meunier B

来源：Journal of Catalysis, 2005, 234(2): 250-255.

DOI：10.1016/j.jcat.2005.06.021

• Schiff base
• manganese
• N,O ligands
• asymmetric catalysis
• epoxidation

A new chiral macrocyclic Mn(III)-salen complex has been prepared with two salicylidene moieties linked together to their 3 and 3' positions by an aliphatic polyether bridge. This complex provides a highly enantioselective (up to 93%) catalyst for epoxidation of cis-disubstituted olefins with sodium hypochlorite as an oxygen atom donor and can be recycled up to three times without significant loss in performance.

• 出版日期2005-9-10