Schiff Base Transition Metal Complex Catalyzed One-Pot Synthesis of 2-Aryl-1H-phenanthro[9,10-d]imidazoles

Abstract

A rapid, efficient, and novel methodology for the synthesis of 2-aryl-1H-phenanthro[9,10-d]imidazole derivatives, catalyzed by bis[N-(3,5-dicumylsalicylidene)-2′,6′-fluoroanilinato]zirconium(IV) dichloride under ultrasonic irradiation at room temperature, is reported. A range of substituted imidazoles was synthesized in excellent yields from one-pot reaction of aromatic aldehydes, 9,10-phenanthrenequinone, and ammonium acetate. The remarkable features of this new procedure are introducing a new one-pot method for synthesis of 2-aryl-1H-phenanthro[9,10-d]imidazoles, high conversion, short reaction time, and simple experimental and workup procedure.

Keywords:

• 2-aryl-1H-phenanthro[9
• 10-d]imidazoles
• one-pot
• Schiff base