Indium(III) Chloride Catalyzed One-Pot Multicomponent Synthesis of Chromenone- and Quinolone-Annulated Imidazole Derivatives

A one-pot multicomponent strategy for the synthesis of chromenone- and quinolone-annulated imidazole derivatives from easily available starting materials has been achieved via an indium(III) chloride catalyzed domino reaction. The protocol is simple, step-economic, and less hazardous, and also provides good yields of the products.