Two series of fused benzimidazoles were synthesized via a facile, one-pot procedure under microwave irradiation. This procedure generated the desired products in high yields and could provide a useful synthetic platform with potential applications in medicinal chemistry.
Keywords: Benzimidazole; Cyclization; Groebke–Blackburn reaction; Microwave irradiation; Multicomponent reactions (MCRs); Three-component condensation (3-CC).