Question

Please provide the mechanism for steps1 through 4 including any relevant resonance structures.

STEP 1 NH2 STEP 2 liquid NH3 33 °C, 5 hrs Cl NH2 O Cl Cl NaOH (1 eq.), 10 °C, 30 mins, with dioxane as solvent Cl Cl Cl pyridine (solvent), heat at STEP 3 reflux with Dean-Stark Trap, 1 hour H3C но STEP 4 1. NaOCH3 in CH3OH 2. CHal in DMF, 30 min Cl Cl Diazepam (Valium) NOTE the 7-membered ring!!

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