Silver-Catalyzed One-Pot Cyclization Reaction of Electron- Deficient Alkynes and 2-Yn-1-ols: An Efficient Domino Process to Polysubstituted Furans
作者:Hua Cao、Huanfeng Jiang、Ronghuan Mai、Shifa Zhu、Chaorong Qi
DOI:10.1002/adsc.200900685
日期:2010.1.4
Transition metal‐catalyzed domino reactions have been used as powerful tools for the preparation of polysubstituted furans in a one‐pot manner. In this paper, an efficient synthetic method was developed for the construction of tri‐ or tetrasubstituted furans from electron‐deficient alkynes and 2‐yn‐1‐ols by a silver‐catalyzed domino reaction. It is especially noteworthy that a 2,3,5‐trisubstituted
过渡金属催化的多米诺反应已被用作单锅制备多取代呋喃的有力工具。在本文中,开发了一种有效的合成方法,该方法可通过电子催化的多米诺骨牌反应,从缺电子的炔烃和2炔-1-醇制备三或四取代的呋喃。特别值得一提的是,2,3,5-三取代的4-炔基呋喃是以极其直接的方式正式获得的,而无需繁琐的逐步合成。此外,当使用取代的芳基炔基酮时,会观察到区域异构的呋喃。这种方法代表了一种缺乏电子途径的高效合成途径,即缺乏电子的呋喃。使用市售催化剂和材料,该反应可在温和条件下有效地进行。