Abstract

Abstract The utility of [EMIm][Pro] as an efficient catalyst for the one-pot direct asymmetric aza Diels–Alder reaction has been developed. A set of cyclic α,β-unsaturated ketones have been explored in up to 93% yield with up to >99/1 dr and >99% ee. Moreover, the catalytic system can be recycled and reused for six times without any significant loss of catalytic activity.

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