enantioselectivity

Three strategies (additive, chiral auxiliary or chiral reagent) were developed to improve the diastereoselectivity or enantioselectivity of the ylide cyclopropanation reactions.

通过添、手辅基、手试等3种策略,分别控制反应的非对映和对映。

The enantioselectivity of N-dodecanoyl-L-proline-3,5-dimethyl-anilide is also good, but the basic line fluctuates strongly due to containing benzene ring in its molecular structure.

虽然用N-十二酰基-L-脯酸-3,5-二甲基苯胺作添，手也较好，但由于含有苯环，紫外吸收增强，基线波动严重。