(Dynamic) Kinetic Resolution of Enamines/Imines: Enantioselective N‐Heterocyclic Carbene Catalyzed [3+3] Annulation of Bromoenals and Enamines/Imines
作者:Kun‐Quan Chen、Zhong‐Hua Gao、Song Ye
DOI:10.1002/anie.201813047
日期:2019.1.21
The enantioselective N‐heterocyclic carbene catalyzed [3+3] annulation of α‐bromoenals by dynamic kinetic resolution (DKR) of enamines and normal resolution of α,α‐disubstituted imines were developed. The corresponding substituted dihydropyridones were isolated in good yields with excellent diastereo‐ and enantioselectivities, and a high selective factor (up to 83) was realized for the resolution of
通过烯胺的动态动力学拆分(DKR)和α,α-二取代的亚胺的正常拆分,开发了对映选择性的N-杂环卡宾催化α-溴代烯的[3 + 3]环化。分离得到的相应取代的二氢吡啶酮具有良好的非对映选择性和对映选择性,并实现了高选择性因子(最高83)用于拆分α,α-二取代的亚胺。