Facile Synthesis of 1,2,3,4-Tetrahydro-β-carbolines by One-Pot Domino Three-Component Indole Formation and Nucleophilic Cyclization
作者:Yusuke Ohta、Shinya Oishi、Nobutaka Fujii、Hiroaki Ohno
DOI:10.1021/ol900460m
日期:2009.5.7
Two direct synthetic methods of 1,2,3,4-tetrahydro-β-carboline derivatives have been developed. After initial indole formation by copper-catalyzed domino three-component coupling−cyclization using an appropriate ethynylaniline, aldehyde, and a secondary amine, treatment with t-BuOK/hexane or MsOH afforded the desired tetrahydro-β-carboline derivatives in moderate to good yields.
已经开发了两种直接合成1,2,3,4-四氢-β-咔啉衍生物的方法。在使用适当的乙炔基苯胺,醛和仲胺通过铜催化的多米诺三组分偶联环化反应最初形成吲哚后,用t- BuOK /己烷或MsOH处理得到所需的四氢-β-咔啉衍生物,产率中等至良好。