Iron-catalyzed hydroaminocarbonylation of alkynes: Selective and efficient synthesis of primary α,β-unsaturated amides
作者:Zijun Huang、Jia Tang、Xiongwei Jiang、Tianle Xie、Minmin Zhang、Donghui Lan、Shaofeng Pi、Zhengde Tan、Bing Yi、Yuehui Li
DOI:10.1016/j.cclet.2022.01.080
日期:2022.11
α,β-Unsaturated primary amides are important intermediates and building blocks in organic synthesis. Herein, we report a ligand-free iron-catalyzed hydroaminocarbonylation of alkynes using NH4HCO3 as the ammonia source, enabling the highly efficient and regioselective synthesis of linear α,β-unsaturated primary amides. Various aromatic and aliphatic alkynes are transformed into the desired linear α
α,β-不饱和伯酰胺是有机合成中重要的中间体和结构单元。在此,我们报道了一种使用 NH 4 HCO 3作为氨源的无配体铁催化炔烃的氢化氨基羰基化反应,从而能够高效和区域选择性地合成线性α,β-不饱和伯酰胺。各种芳香族和脂肪族炔烃以良好至极好的收率转化为所需的线性α,β-不饱和伯酰胺。进一步的研究表明,使用 NH 4 HCO 3作为氨源是获得良好收率和选择性的关键。该路线的实用性通过线性α,β的合成得到证明-不饱和酰胺,包括类香草素受体 1 拮抗剂 TRPV-1。