An Oxidative [3+2+1] Cyclization of Enaminones and N‐Alkenyl‐2‐pyrrolidinone: Access to Polysubstituted 4‐Alkylated 1,4‐dihydropyridines
作者:Zhangmengjie Chai、Longkun Chen、Zhuoyuan Liu、Yulin Sun、Donghan Liu、Mingshuai Zhang、Yongchao Wang、Fuchao Yu
DOI:10.1002/adsc.202300088
日期:——
4-alkylated 1,4-dihydropyridines (1,4-DHPs). By using terminal olefin as the C4 source of the 1,4-DHP skeleton, this synthetic strategy provides a series of 1,4-DHPs through a 1,1-difunctionalization/cyclization process. In this protocol, two C(sp3)−C(sp2) bonds and a C(sp2)−N bond are simultaneously formed, the hydrogen source on the newly formed methyl group of the 1,4-DHP skeleton is confirmed and a possible
烯胺酮和N -烯基-2-吡咯烷酮的氧化 [3+2+1] 环化用于合成 4-烷基化 1,4-二氢吡啶 (1,4-DHP)。通过使用末端烯烃作为 1,4-DHP 骨架的 C4 来源,该合成策略通过 1,1-双官能化/环化过程提供了一系列 1,4-DHP。在该方案中,两个C( sp 3 )−C( sp 2 )键和一个C( sp 2 )−N键同时形成,确认了1,4-DHP骨架新形成的甲基上的氢源并提出了一种可能的机制。