Synthesis of quinolines: reductive coupling reactions of 2-nitro-1,3-diphenyl-2-propen-1-one induced by low-valent titanium

摘要

The intramolecular reductive cyclisation of 2-nitro-1,3-diphenyl-2-propen-1-ones (1) induced by the Sm/TiCl_4 system were studied; 2-arylquinolines (2) are obtained in moderate yields under room temperature conditions.