摘要 : Imidazolium-supported-pyrrolidine-catalyzed asymmetric Michael addition reactions of unmodified ketones and aldehydes to nitroalkenes were performed in [BMIm]PF6 to give products in up to 98% yield and 99% enantioselectivity. The ... 展开 Imidazolium-supported-pyrrolidine-catalyzed asymmetric Michael addition reactions of unmodified ketones and aldehydes to nitroalkenes were performed in [BMIm]PF6 to give products in up to 98% yield and 99% enantioselectivity. The catalytic system presented a synergistic effect in the improvement of reaction performance and could be recycled. 收起