作者:A. Sudhakara、H. Jayadevappa、K. M. Mahadevan、Vijaykumar Hulikal
DOI:10.1080/00397910802656059
日期:2009.6.23
Abstract An efficient one-pot procedure for the synthesis of 2-ethoxycarbonyl indoles from commercially available materials has been developed. The one-step procedure involves in situ formation of the hydrazones from phenylhydrazine hydrochloride and ethyl pyruvate in the presence of bismuth nitrate followed by Fischer cyclization in polyphosphoric acid and ethanol. This method is efficient and simple