Potassium Carbonate → HCID 66731056, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (S)-6-(3-cyano-6-ethyl-5-fluoro-1H-indol-2-yl)-N-(1,1,1-trifluoropropan-2-yl)pyridine-3-sulfonamide (0.22 g, 0.5 mmol), prepared as above, 2-bromopyrimidine (0.167 g, 1.0 mmol), potassium carbonate (0.212 g, 1.5 mmol) and copper (I) iodide (20 mg, 0.1 mmol) were mixed with DMF (2.5 mL). The system was evacuated and replaced with an argon atmosphere. The reaction mixture was stirred at 110° C. for 70 hr, then cooled to 0° C., diluted with ethyl acetate and neutralized with 1N HCl. The ethyl acetate layer was washed with water, brine, dried over Na2SO4, filtrated through silica gel pad and evaporated. The crude product was triturated with CH2Cl2 and hexane and was further recrystallized from ethyl acetate and hexane. After air drying, the off-white solid (S)-6-(3-cyano-6-ethyl-5-fluoro-1-(pyrimidin-2-yl)-1H-indol-2-yl)-N-(1,1,1-trifluoropropan-2-yl)pyridine-3-sulfonamide was obtained. Melting point: 195-198° C.; MS m/z 519.1 M-1-H+; 1H NMR (500 MHz, acetone-d6): □ 8.90 (1H, dd, J=2.5, 1.0 Hz), 8.83 (2H, d, J=4.5 Hz), 8.49 (1H, dd, J=8.0, 2.5 Hz), 8.16 (1 H, t, J=6.5 Hz), 8.15 (1 H, d, J=9.0 Hz), 7.68 (1 H, br s), 7.57-7.54 (2H, m), 4.32 (1 H, br s), 2.85 (2 H, q, J=7.5 Hz), 1.29 (3 H, t, J=7.5 Hz), 1.28 (3 H, d, J=7.2 Hz).

Provenance & Evidence