N-(2-Aminobenzylidene)-4-methylanilines—stable and cheap alternate for 2-aminobenzaldehydes: concise synthesis of 3-unsubstituted-2-aroylindoles
作者:Thavaraj Vivekanand、Thiruvalluvan Sandhya、Perumal Vinoth、Subbiah Nagarajan、C. Uma Maheswari、Vellaisamy Sridharan
DOI:10.1016/j.tetlet.2015.07.073
日期:2015.9
Synthesis of 3-unsubstituted-2-aroylindoles starting from readily available N-(2-aminobenzylidene)-4-methylanilines, cheap and stable alternative to 2-aminobenzaldehydes, and alpha-bromoketones was achieved in moderate to good yields under basic conditions. The reaction proceeded via sequential N-alkylation-intramolecular nucleophilic cyclization-elimination steps in a single operation. (C) 2015 Elsevier Ltd. All rights reserved.