synthesis of benzodiazepines

Hallo guys, :-) I have already seen that in this forum the following synthesis route is discussed: "New and mild method for the synthesis of alprazolam..." Synthesis of 7-chloro-5-phenyl-1H benzo[e][1,4]diazepin-2(3H)-one (nordiazepam) (Step 1) To a vigorously stirred of 2-amino-5-chloro...