The known 7,8-dihydro-8-methyl-5-(4-nitrophenyl)-9H-1,3-dioxolo-[4,5-h]-2,3-benzodiazepine (I) was condensed with 1,1'-carbonyldiimidazole (II) in refluxing THF to produce imidazolide (III). Subsequent reaction of (III) with boiling cyclopropylamine (IV) gave rise to the cyclopropylcarbamoyl derivative (V). The nitro group of (V) was then reduced to the corresponding amine by hydrogenation over Pd/C.