An expedient and efficient one‐pot three‐component synthesis of 3‐substituted indoles has been developed by the reaction of indoles, active methylene compounds and aldehydes using a catalytic amount of tetrabutylammonium fluoride undersolvent‐freeconditions.
An efficient and clean Michael addition of indoles to electron-deficient olefins under solvent- and catalyst-free condition
作者:Xiong-Li Liu、Dong Xue、Zun-Ting Zhang
DOI:10.1002/jhet.569
日期:2011.3
An efficientMichaeladdition of indoles to electron‐deficient olefinsunder solvent‐ and catalyst‐free condition afforded biologically important 3‐substituted indole derivatives in good to excellent yields was reported. The acidic NH proton of indole plays a key role in Michaeladdition of indoles to electron‐deficient olefins. This very simple procedure provides an efficient and clean process for