Bi(OTf)₃-[Bmim]PF₆: A novel and Reusable Catalytic System for the Synthesis of cis -Aziridine Carboxylates

Abstract

Aldimines (generated in situ from aldehydes and amines) react readily with ethyl diazoacetate in the presence of 2 mol% of Bi(OTf)₃ or 5 mol% of Sc(OTf)₃ in [bmim]PF₆ ionic liquid to produce the corresponding aryl aziridine carboxylates in high yields with excellent cis-diastereoselectivity. The recovered ionic liquid containing catalyst was reused in three to four subsequent runs with gradual decrease in activity.

aldimines - aziridine carboxylates - metal triflates - ionic liquids (ILs)

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