Base-promoted three-component cascade approach to unsymmetrical bis(indolyl)methanes
作者:Mohit L. Deb、Bhaskar Deka、Prakash J. Saikia、Pranjal K. Baruah
DOI:10.1016/j.tetlet.2017.04.032
日期:2017.5
base-catalyzed reaction of two different indoles with aldehydes under heating to produce unsymmetrical bis(indolyl)methanes (BIMs), in which one of the indole ring must be N-substituted. Mixture of EtOH-H2O is used as solvent. The reaction did not give symmetrical BIMs of N-substituted indoles or N–H indoles. However, traces of latter were formed in few cases, especially when electron-rich aldehydes were used