Diisopropylethylamine → (S)-5-Chloro-6-(5-cyclopropyl-1H-pyrazol-3-ylamino)-2-(1-(5-fluoropyridin-2-yl)ethylamino)nicotinonitrile

Participants

Reaction Steps

A solution of 2,5-dichloro-6-(5-cyclopropyl-1H-pyrazol-3-ylamino)nicotinonitrile (Method 43, 0.60 g, 2.04 mmol), DIEA (0.34 g, 2.65 mmol), and (S)-1-(5-fluoropyridin-2-yl)ethanamine (Method 33; 0.90 g, 6.12 mmol) in n-BuOH was heated to 120° C. for 9 hours. The reaction was then cooled to room temperature, diluted with water (20 ml), and extracted with DCM (2×50 ml). The combined organic fractions were dried over Na2SO4, filtered, and then concentrated. The resulting oil was purified by column chromatography (DCM-MeOH=100:1) to give the title compound (0.42 g, 52%). 1H NMR (400 MHz, CD3OD) δ 8.42 (d, J=2.7 Hz, 1H), 7.61 (s, 1H), 7.51-7.49 (m, 1H), 7.38-7.32 (m, 1H), 6.06 (br s, 1H), 5.28-5.22 (m, 1H), 1.94-1.88 (m, 1H), 1.58 (d, J=6.9 Hz, 3H), 1.01 (br s, 2H), 0.76-0.75 (m, 2H). MS: Calcd.: 397. Found: [M+H]+ 398.

Provenance & Evidence