Strong Lewis acid air-stable cationic titanocene perfluoroalkyl(aryl)sulfonate complexes as highly efficient and recyclable catalysts for C–C bond forming reactions
l-Proline catalyzed domino Michael addition of N-substituted anilines
作者:Mohit L. Deb、Bhaskar Deka、Iftakur Rahman、Pranjal K. Baruah
DOI:10.1016/j.tetlet.2018.11.004
日期:2018.12
Here we report l-proline catalyzed 3-component reaction of indoles, aldehydes and N-substituted anilines in water as solvent at room temperature for the synthesis of 3-(α,α-diarylmethyl)indoles. The reaction is in fact a Michael addition of N-substituted anilines to alkylideneindolenines. The reaction is very clean, high yielding and having broad substrate scope. A tentative mechanism is proposed.