科研之友
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摘要
A chiral anion modified ionic liquid derived from L-proline proves as a green and efficient asymmetric organocatalyst for direct asymmetric aldol reactions in [BMIm]BF4 at room temperature. The corresponding aldol products with moderate to good isolated yields (up to 99%), anti-diastereoselectivities (up to 97:3), and excellent enantioselectivities (up to 99% ee) were afforded. Recycling of the catalyst and solvent ([BMIm]BF4) was possible up to four runs with a slight reduction in activity.
- 出版日期2010-7
- 单位南开大学
