Hydrogen Peroxide → HCID 178458647、化合物

(S)-5-Fluoro-2-(1-(4-fluorophenyl)ethylamino)-6-(5-isopropoxy-1H-pyrazol-3-ylamino)nicotinonitrile (Example 16; 0.15 g, 0.38 mmol), was placed in MeOH (7 ml) at 25° C. A 25% aqueous solution (0.4 ml) of KOH (0.11 g, 1.9 mmol) was then added, followed by the addition of 0.1 ml of 30% H2O2. The resulting dark red solution was heated to 65° C. for 1 h, cooled to 25° C., and concentrated. The resulting residue was dissolved in EtOAc (50 ml), washed with water (30 ml), dried, filtered, and concentrated. The resulting solid was purified by column chromatography (DCM-MeOH=25:1) to give the title compound (0.044 g, 28%). 1H NMR (400 MHz, CD3OD) δ 7.75 (d, J=11.7 Hz, 1H), 7.39-7.36 (m, 2H), 7.04-7.00 (m, 2H), 5.37 (s, 1H), 5.11-5.00 (m, 1H), 4.61-4.52 (m, 1H), 1.53 (d, J=7.0 Hz, 3H), 1.31 (m, 6H). MS: Calcd.: 416. Found: [M+H]+417.