Construction of Spirocyclic Pyrrolo[1,2-<i>a</i>]quinoxalines via Palladium-Catalyzed Hydrogenative Coupling of Phenols and Nitroarenes
作者:Haibo Liu、Xiaomin Mai、Jiayi Xian、Shuting Liu、Xiangyu Zhang、Bin Li、Xiuwen Chen、Yibiao Li、Feng Xie
DOI:10.1021/acs.joc.2c02158
日期:2022.12.16
The replacement of fossil resources with biomass resources in the construction of N-heterocycles is rapidly attracting research interest. Herein, we report palladium-catalyzed selective hydrogenative coupling of nitroarenes and phenols based on a transfer hydrogenation strategy, allowing straightforward access to spirocyclic pyrrolo- and indolo-fused quinoxalines, a class of compounds found in numerous
在N-杂环的构建中用生物质资源替代化石资源正在迅速引起研究兴趣。在此,我们报告了钯催化的基于转移氢化策略的硝基芳烃和苯酚的选择性氢化偶联,允许直接获得螺环吡咯并和吲哚稠合喹喔啉,这是一类在许多天然生物碱中发现的化合物。合成方案的特点是广泛的底物范围和利用生物质衍生的反应物和市售催化剂。在这种转化中,不需要高压和爆炸性氢气。本报告提供了一种将生物质衍生的酚类转化为增值的含氮化学品的新方案。