Trifluoroacetic acid → HCID 69096970, compound

Participants

Reaction Steps

To a solution of tert-butyl [5-chloro-4-methoxy-2-(2-oxo-2-pyridin-3-ylethyl)phenyl]carbamate (1.28 g) in dichloromethane (17 mL) was added trifluoroacetic acid (3.4 mL) under ice-cooling, and the mixture was stirred at room temperature for 24 hours. The reaction mixture was concentrated under reduced pressure. The residue was dissolved in ethyl acetate, and the resulting mixture was washed with a saturated aqueous sodium hydrogen carbonate solution and saturated brine successively. The organic layer was dried over anhydrous sodium sulfate, and then concentrated under reduced pressure to obtain the title compound (812 mg). 1H-NMR (CDCl3) δ ppm: 3.95 (3H, s), 6.77-6.85 (1H, m), 7.14 (1H, s), 7.38 (1H, dd, J=4.8, 8.0 Hz), 7.45 (1H, s), 7.86-7.96 (1H, m), 8.36 (1H, br s), 8.53-8.60 (1H, m), 8.90-8.97 (1H, m).

Provenance & Evidence