Diisopropylethylamine → (S)-N4-(5-cyclopropyl-1H-pyrazol-3-yl)-N2-(1-(4-fluorophenyl)ethyl)-5-nitropyridine-2,4-diamine

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Reaction Conditions

Reaction Steps

A mixture of 2-chloro-N-(5-cyclopropyl-1H-pyrazol-3-yl)-5-nitropyridin-4-amine (Method 90, 0.15 g, 0.54 mmol), (S)-1-(4-fluoro-phenyl)-ethylamine (0.093 g, 0.67 mmol), and DIEA (0.12 ml, 0.67 mmol) in n-BuOH (5 ml) was heated in a sealed tube at 180° C. for 32 hours. The solvent was removed under reduced pressure and the residue was purified by column chromatography (hexane-EtOAc=1:1) to give the title compound as a yellow solid (0.168 g, 82%). 1H NMR (400 MHz) 12.37 (s, 1H), 9.59 (b, 1H), 8.83 (s, 1H), 8.20 (b, 1H), 7.37 (m, 2H), 7.13 (m, 2H), 6.69 (b, 1H), 5.88 (b, 1H), 5.29 (m, 1H), 1.91 (m, 1H), 1.43 (d, J=6.4 Hz, 3H), 0.97 (m, 2H), 0.71 (m 2H). MS: Calcd.: 382; Found: [M+H]+ 383.

Provenance & Evidence