Trifluoroacetic acid → 2,3,4,5-Tetrahydro-1H-3-benzazepine-7-carbonitrile

Participants

Reaction Steps

A mixture of 3-(tert-butoxycarbonyl)-7-cyano-2,3,4,5-tetrahydro-1H-3-benzazepine (765 mg, 2.81 mmol) and trifluoroacetic acid (2 ml), in dichloromethane (20 ml) was stirred at 40° C. for 1 h. The reaction mixture was evaporated to dryness in vacuo and partitioned between ethyl acetate (50 ml) and water (50 ml). The aqueous layer was basified using potassium carbonate and re-extracted with ethyl acetate (2×30 ml). The combined basic organic extracts were dried over sodium sulfate and evaporated in vacuo to give the title compound as a colourless oil (212 mg, 44%).

Provenance & Evidence