A new and efficient one-pot synthesis of [1, 2, 3] triazolo [1, 5-a][1, 4] benzodiazepin-6 (4H)- ones is described starting from readily available anthranilic acids. A small array of the title compounds were assembled via a four-step sequence involving diazotisation, azide addition followed by amide bond formation employing polymer supported carbodiimide and subsequent 1, 3-dipolar cycloaddition reaction.
