Gold
<scp>Self‐Relay</scp>
Catalysis Enabling [3,3]‐Sigmatropic Rearrangement/Nazarov Cyclization and Allylic Alkylation Cascade for Constructing
<scp>All‐Carbon</scp>
Quaternary Stereocenters
作者:Fan‐Tao Meng、Xiao‐Yan Qin、Jing Li、Tian‐Shu Zhang、Shu‐Jiang Tu、Bo Jiang、Wen‐Juan Hao
DOI:10.1002/cjoc.202100734
日期:2022.3.15
type of structure units is full of challenge due to their congested chemical environment. Herein, we report a new gold(I) self-relay catalysis merging [3,3]-sigmatropic rearrangement/Nazarov cyclization with allylic alkylation starting from 1,3-enyne acetates and allylic alcohols, producing a wide range of synthetically important allyl cyclopentenones with an all-carbon quaternary stereocenter in good
具有全碳四元立体中心的分子支架普遍存在于天然产物和重要的生物活性分子中。然而,由于其拥挤的化学环境,此类结构单元的高效构建充满挑战。在此,我们报道了一种新的金 (I) 自中继催化,将 [3,3]-σ 重排/Nazarov 环化与从 1,3-烯炔乙酸酯和烯丙醇开始的烯丙基烷基化结合,产生了范围广泛的合成重要的烯丙基环戊烯酮在温和条件下具有良好收率的全碳四元立体中心。该协议展示了区域选择性的精确控制、底物的高官能团耐受性和金催化剂的低负载量,无需惰性气氛保护,