A new approach to the synthesis of benzofuro[3,2-b]quinolines, benzothieno[3,2-b]quinolines and indolo[3,2-b]quinolines

Article abstract of DOI:10.1002/jhet.5570370430

Treatment of 2-hydroxy-, 2-mercapto-, and 2-ethoxycarbonylamino-benzonitriles 12 with 2-fluoro- or 2-nitrophenacylbromides 13 under alkaline conditions provided the corresponding benzofuran, benzothiophene, and indole intermediates 10, respectivelly. Nucl