How to choose the base used in the synthesis of arsine ylide is studied.

本文主要研究了胂叶立德合成中碱的选择。

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

、手辅基、手试等3种策略,分别控制反应的非对映选择和对映选择。