Methanesulfonic Acid → (S)-N-((6-(5-Cyclopropyl-1H-pyrazol-3-ylamino)-5-fluoro-2-(1-(4-fluorophenyl)ethylamino)pyridin-3-yl)methyl)methanesulfonamide

Participants

Reaction Conditions

Reaction Steps

A round bottom flask was charged with (5)-3-(aminomethyl)-N6-(5-cyclopropyl-1H-pyrazol-3-yl)-5-fluoro-N2-(1-(4-fluorophenyl)ethyl)pyridine-2,6-diamine (Example 3; 0.025 g, 0.065 mmol), methanesulfonic acid loaded TFP resin (0.9 mmol/g loading, 0.065 mmol), DIEA (0.017 g, 0.13 mmol), DMAP (0.09 g, 0.072 mmol), and THF (5 ml). The resulting solution was shaken vigorously at 60° C. for 8 hrs. The reaction was filtered and the resulting resin was washed with a THF-DCM solution (1:1, 3×5 ml for 30 min. each). The resulting organic layers were combined and concentrated. The resulting solid was purified by reverse-phase column chromatography (5-50% CH3CN in H2O over 400 ml) to give the title compound (0.016 g, 53%). 1H NMR (400 MHz, CD3OD) δ 7.42-7.39 (m, 2H), 7.14 (d, J=10.7 Hz, 1H), 7.01-6.97 (m, 2H), 5.16-5.09 (m, 1H), 4.15-4.06 (m, 2H), 2.99 (s, 3H), 1.88-1.83 (m, 1H), 1.52 (d, J=6.8 Hz, 3H), 0.95-0.93 (m, 2H), 0.66-0.64 (m, 2H). MS: Calcd.: 462. Found: [M+H]+ 463.

Provenance & Evidence