ethyl 2-(3-azido-2-oxo-4,5-dihydro-3H-1-benzazepin-1-yl)acetate → 3-amino-1-ethoxycarbonylmethyl-2,3,4,5-tetrahydro-1H-[1]benzazepin-2-one

Participants

Reaction Steps

The reaction mixture of 3-azido-1-ethoxycarbonylmethyl-2,3,4,5-tetrahydro-1H[1]-benzazepin-2-one (13.98 kg) and 5% palladium on carbon (1.3 kg) in anhydrous ethanol (57 liters) was hydrogenated under 3 atmospheres pressure of hydrogen for 5 hours. The pressure reactor was vented at hourly intervals to remove the accumulated nitrogen. The catalyst was removed by filtration and washed with ethyl alcohol. The solution was evaporated to dryness to give 3-amino-1-ethoxycarbonylmethyl-2,3,4,5-tetrahydro-1H-[1]benzazepin-2-one.

Provenance & Evidence