Gold(I)‐Catalyzed Cascade Cyclization of Nitrogen or Oxygen Containing Nucleophile Tethered‐Vinylidenecyclopropanes to Pyrrole, Furan, Pyrrolidine and Piperidine Skeletons
作者:Jun‐Sheng Wei、Zi‐Yu Xu、Yin Wei、Min Shi
DOI:10.1002/adsc.202300261
日期:2023.6.13
In this paper, we report a gold(I)-catalyzed cascade cyclization of N- or O-nucleophile tethered-vinylidenecyclopropanes (VDCPs), resulting in the synthesis of pyrrole, furan, pyrrolidine, and piperidine skeletons in 30%-98% yields. Depending on the carbon chain length connecting the nucleophile and VDCPs, two reaction pathways are available, leading to different products. Both α-amino VDCPs and α-hydroxyl
在本文中,我们报道了金 (I) 催化的N - 或O的级联环化-亲核试剂系链亚乙烯基环丙烷 (VDCP),导致以 30%-98% 的收率合成吡咯、呋喃、吡咯烷和哌啶骨架。根据连接亲核试剂和 VDCP 的碳链长度,有两种反应途径可供选择,从而产生不同的产物。α-氨基 VDCP 和 α-羟基 VDCP(其中亲核试剂和 VDCP 通过亚甲基连接)均经历分子内亲核加成和芳构化,然后环丙烷单元开环生成取代的吡咯和呋喃。通过将链长延长至三个或四个碳原子,可以通过环丙烷单元的扩环形成具有环丁烯部分的吡咯烷和哌啶,并伴随金卡宾诱导的插烯亲核加成。