Synthesis of Indoles by Palladium-Catalyzed Reductive Cyclization of β-Nitrostyrenes with Carbon Monoxide as the Reductant
作者:Francesco Ferretti、Mohamed A. EL-Atawy、Stefania Muto、Mohamed Hagar、Emma Gallo、Fabio Ragaini
DOI:10.1002/ejoc.201500933
日期:2015.9
An efficient catalytic cyclization of β-nitrostyrenes to indoles was developed. The reaction was applied to the synthesis of 3-arylindoles and 2-alkylindoles. Given that in the latter case the starting β-nitrostyrenes can be easily obtained by a Henry reaction, the present method allows indoles to be obtained in a two-step sequence starting from cheap reactants.
开发了一种有效的 β-硝基苯乙烯催化环化成吲哚。该反应用于合成3-芳基吲哚和2-烷基吲哚。鉴于在后一种情况下起始 β-硝基苯乙烯可以很容易地通过亨利反应获得,本方法允许从廉价的反应物开始以两步顺序获得吲哚。