Copper-Catalyzed<i>N</i>-Aryl-β-enaminonitrile Synthesis Utilizing Isocyanides as the Nitrogen Source
作者:Seoksun Kim、Soon Hyeok Hong
DOI:10.1002/adsc.201400973
日期:2015.3.23
A novel synthetic protocol for N‐aryl‐β‐enaminonitriles, which are useful building blocks for heterocycle synthesis, was developed using isocyanides as the nitrogen source. Using copper‐catalyzed one‐step reactions between isocyanides and benzyl cyanides under mild conditions, diverse N‐aryl‐β‐enaminonitriles could be synthesized in excellent yields and with high atom‐efficiency. N‐Alkyl‐β‐enaminonitriles
使用异氰化物作为氮源,开发了一种新的N-芳基-β-烯胺腈合成方案,这是杂环合成的有用组成部分。使用异腈和苄基氰之间铜催化的单步反应在温和的条件,不同的下ñ -芳基- β-enaminonitriles可以以优良产率和具有高原子效率来合成。N-烷基-β-氨基腈也以高收率合成。基于机理研究和先前的报道,提出了一种涉及亚氨基-铜-铜中间体的机理。此外,我们证明了合成的N芳基-β-氨基腈可用于合成β-酮腈化合物和3-氨基吡唑。