Green Synthesis of Benzo or Cyclopenta[j][1,7]phenanthroline Derivatives in EtOH under Catalyst‐free Conditions

Abstract

A total of 25 benzo[j][1,7]phenanthroline and cyclopenta[j][1,7]phenanthroline derivatives were synthesized in EtOH under catalyst‐free conditions. This procedure included a three‐component reaction of aromatic aldehydes, quinolin‐7‐amine, and active methylene compounds and provided an efficient and green access to the synthesis of [1,7]phenanthrolines in high yields.