An efficient synthesis of 2-phenylimidazo [4, 5-f][1, 10] phenanthroline derivatives catalysed by boric acid under solvent free conditions at room temperature

Syed Shahed Ali

Abstract

Boric acid (BO3H3) catalyzed three component improved procedure for the synthesis of various 2–Phenylimidazo [4, 5-f] [1, 10] phenanthrolines from 1, 10- phenanthroline-5, 6-dione, aromatic aldehydes and ammonium acetate at roomtemperature in excellent isolated yield has been reported. This is a simple and straight forward, high yielding, does not involve any hazardous or expensive catalyst. The synthesis is purely solvent free.