l-Proline catalysed multicomponent synthesis of 3-amino alkylated indolesvia a Mannich-type reaction under solvent-free conditions
作者:Atul Kumar、Maneesh Kumar Gupta、Mukesh Kumar
DOI:10.1039/c1gc16297g
日期:——
An efficient L-proline catalyzed one-pot synthesis of 3-amino-alkylated indoles has been developed via a three-component Mannich-type reaction viz.secondary amines, aldehyde and indoles under solvent-free conditions at room temperature. Several amino acids (acidic, basic and neutral) have been screened for the reaction but the best results were obtained with L-proline.
An efficient micelle promoted one-pot synthesis of 3-amino alkylated indoles has been developed via a three-component Mannich-type reaction from secondary amines, aldehydes and indoles in water under mild reaction conditions. In this Mannich-type reaction, micelles stabilize iminium ions, which undergo a nucleophilic addition of the indole to give 3-amino alkylated indoles in very good yields.