Trifluoroacetic acid → HCID 22293348, compound

Participants

Reaction Steps

To 1,1-dimethylethyl tetrahydro-3-oxo-8a-(phenylmethyl)-3H-oxazolo[3,4-a]pyrazine-7(1H)-carboxylate (2.8 g, 8.6 mmol) were added dichloromethane (40 mL) and trifluoroacetic acid (9.7 g, 86 mmol), and the mixture was stirred at room temperature for 2 hours. The reaction solution was concentrated under reduced pressure, and ethyl acetate was added to the residue. The resulting mixture was washed with a 0.5 M aqueous sodium hydrogen carbonate solution, dried over anhydrous magnesium sulfate and concentrated under reduced pressure to obtain the title compound (1.74 g, yield 88%).

Provenance & Evidence