reaction pathways. A concerted endo-selective [3 + 2]-cycloaddition pathway is developed for the reaction of methyl imino ester, whereas endo-pyrrolidines with an opposite absolute stereochemical outcome are prepared by using the stepwise reaction pathway of tert-butyl imino ester. The development of catalyst- and substrate-controlled stereodivergent approaches highlights the inherent substrate–catalyst
通过使用催化剂和底物控制的反应途径描述了
吡咯烷的对映异构和非对映异构方法。建立了协同的内选择性[3 + 2]-环加成途径用于甲基亚
氨基酯的反应,而通过使用叔丁基亚
氨基酯的逐步反应途径制备了具有相反的绝对立体
化学结果的内
吡咯烷酮。催化剂和底物控制的立体发散剂方法的发展突出了
金属化的偶氮甲碱的[3 + 2]-环加成反应中固有的底物-催化剂相互作用。