Catalytic Asymmetric Heterogeneous Aziridination and Epoxidation of Alkenes using Modified Microporous and Mesoporous Mateirals

摘要

Copper-exchanged zeolite Y is a highly active catalyst for the aziridination of alkenes. Modification using bis(oxazolines) leads to the formation of an enantioselective aziridintion catalyst. Using a similar appraoch, manganeseexchanged MCM-41 modified with a chiral salen ligand is found to be an effective enantioselective heterogeneous epoxidation catalyst for cis-stilbene.