Synthesis of 1,2-Diaryl-1<i>H</i>-indol-4-ols and 1,2-Diaryl-7-ethoxy-1,5,6,7-tetrahydroindol-4-ones from Arylglyoxals and Enamines through Domino Reactions
作者:Subhendu Maity、Sudipta Pathak、Animesh Pramanik
DOI:10.1002/ejoc.201201616
日期:2013.4
A series of 1,2-diaryl- and 1-alkyl-2-aryl-1H-indol-4-ols and 1,2-diaryl-7-ethoxy-1,5,6,7-tetrahydroindol-4-ones have been prepared by the domino reactions of arylglyoxals and enamines at reflux in non-nucleophilic and nucleophilic solvents such as acetonitrile and ethanol, respectively. The transformation occurs by annulation followed by aromatization without the use of any metal or catalyst.
一系列 1,2-二芳基-和 1-烷基-2-芳基-1H-indol-4-ols 和 1,2-diaryl-7-ethoxy-1,5,6,7-tetrahydroindol-4-ones 具有分别通过芳基乙二醛和烯胺在非亲核和亲核溶剂(如乙腈和乙醇)中回流的多米诺反应制备。转化通过环化和芳构化发生,无需使用任何金属或催化剂。