Diversified facile synthesis of benzimidazoles, quinazolin-4(3H)-ones and 1,4-benzodiazepine-2,5-diones via palladium-catalyzed transfer hydrogenation/condensation cascade of nitro arenes under microwave irradiation

An efficient methodology for diversified preparation of benzimidazole, quinazolin-4(3 H )-ones and 1,4-benzodiazepine-2,5-diones is established using a Pd-CTH/condensation cascade of nitro arenes in a TEA–formic acid mixture under microwave irradiation.