Trifluoroacetic acid → HCID 86682245, compound

Participants

Reaction Steps

To a solution of tert-butyl (3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)(prop-2-yn-1-yl)carbamate (2.2 g, 6.61 mmol) in dichloromethane (DCM; 8.3 ml) was added 2,2,2-trifluoroacetic acid (12.06 g, 106 mmol) and the reaction mixture was stirred at ambient temperature for 1 h. The reaction was quenched by the addition of saturated sodium bicarbonate (NaHCO3). The organic layer was extracted with DCM (2×20 mL). The organic layers were combined and dried over sodium sulfate (Na2SO4), filtered and concentrated to afford the title compound as a beige solid (1.5 g, 6.12 mmol, 93%): 1H NMR (400 MHz, CDCl3) δ 8.89 (d, J=2.3 Hz, 1H), 8.50 (dd, J=4.7, 1.4 Hz, 1H), 8.01-7.93 (m, 1H), 7.54 (s, 1H), 7.37 (ddd, J=8.3, 4.8, 0.7 Hz, 1H), 3.90 (s, 2H), 3.38 (s, 1H), 2.44-2.09 (m, 1H); ESIMS m/z 233 ([M+H]+).

Provenance & Evidence