Ammonium Hydroxide → 11-(2-Benzyl-2,5-diazabicyclo(2.2.1) hept-5-yl)-dibenz[b,f][1,4]oxazepine

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Reaction Steps

To a solution of 11-oxo-dibenz[b,f][1,4]oxazepine (Aldrich) (0.149 g, 0.0007 mol) in dry toluene (10 mL), was added (1S,4S)-2-benzyl-2,5-diazabicyclo(2.2.1)heptane (0.54 g, 0.003 mol) and TiCl4 (0.75 mL, 0.0008 mol) via syringe. The mixture was stirred at room temperature for 30 min then refluxed for 5 hrs. The reaction mixture was cooled and dumped into conc. NH4OH and extracted with CHCl3. The combined organic phases were dried (MgSO4) and concentrated in vacuo. The crude material was chromatographed (hexane:EtOAc, 1:1) to give 11-(2-benzyl-2,5-diazabicyclo(2.2.1) hept-5-yl)-dibenz[b,f][1,4]oxazepine (yield 0.1319, mp 70°-72° C.).

Provenance & Evidence