Preparation of 2-arylindole-4-carboxylic amide derivatives
作者:Jeffrey T. Kuethe、Ian W. Davies
DOI:10.1016/j.tet.2006.05.007
日期:2006.12
A practical, highlyefficient protocol has been developed for the synthesis of functionalized 2-arylindole-4-carboxylic amidederivatives. Commercially available methyl 2-methyl-3-nitrobenzoate gave substituted nitrostyrene benzoic acids by reaction with aromatic aldehydes in the presence of DBU in DMSO. Conversion of these products to the desired amides was followed by Pd-catalyzed reductive cyclization