反应详情

(2R)-4-[4-(2-Fluoro-4-methoxyphenyl)-2-oxopyridin-1(2H)-yl]-2-methyl-2-(methylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)butanamide (34.7 mg, 69.9 mmol) and pyridinium p-toluenesulfonic acid (8.8 mg, 34.9 mmol) were dissolved in ethanol (277.6 uL) and immersed in a 75° C. oil bath. The reaction was stirred at this temperature for 1 hour and allowed to cool. Water (600 uL) was added to the solution and the reaction was stirred overnight. A solid was collected via filtration and dried under vacuum to afford the title compound as an off-white powder (22 mg, 76.33%). LCMS m/z 413.5 (M+1). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.57 (s, 3 H) 2.11-2.22 (m, 1 H) 2.37-2.47 (m, 1 H) 3.10 (s, 3 H) 3.68-3.79 (m, 1 H) 3.82 (s, 3 H) 4.05-4.16 (m, 1 H) 6.44-6.50 (m, 1 H) 6.54 (s, 1 H) 6.89 (dd, J=8.68, 2.44 Hz, 1 H) 6.97 (dd, J=13.37, 2.44 Hz, 1 H) 7.54 (dd, J=8.98, 8.98 Hz, 1 H) 7.71 (d, J=7.02 Hz, 1 H) 11.14 (br. s., 1 H).

1. customimmersed in a 75° C.
2. temperatureto cool
3. stirringthe reaction was stirred overnight
4. filtrationA solid was collected via filtration
5. customdried under vacuum