Diisopropylethylamine → (S)-3-Fluoro-N6-(1-(4-fluorophenyl)ethyl)-N2-(5-isopropoxy-1H-pyrazol-3-yl)-5-nitropyridine-2,6-diamine

Participants

Reaction Conditions

Reaction Steps

To a solution of (S)-5,6-difluoro-N-(1-(4-fluorophenyl)ethyl)-3-nitropyridin-2-amine (Method 23; 0.60 g, 2.0 mmol) in THF (10 ml) at room temperature was added 5-isopropoxy -1H-pyrazol-3-amine (0.50 g, 3.0 mmol), and DIEA (0.29 g, 2.2 mmol). The reaction was then heated to 55° C. for 24 hours, cooled to room temperature, and quenched with water. The reaction was then extracted with DCM (2×75 ml), and 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 (0.34 g, 40%). 1H NMR (400 MHz, CD3OD) δ 8.00 (d, J=10.9 Hz, 1H), 7.45-7.35 (m, 2H), 7.07-7.03 (m, 2H), 5.88-5.71 (m, 1H), 5.48-5.30 (m, 1H), 4.58-4.29 (m, 1H), 1.68-1.56 (m, 3H), 1.34-1.28 (m, 6H). MS: Calcd.: 418. Found: [M+H]+ 419.

Provenance & Evidence