Trifluoromethanesulfonyl chloride → (S)-N-((6-(5-Cyclopropyl-1H-pyrazol-3-ylamino)-5-fluoro-2-(1-(4-fluorophenyl)ethylamino)pyridin-3-yl)methyl)-1,1,1-trifluoromethanesulfonamide

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Reaction Steps

To a solution of (S)-3-(aminomethyl)-N6-(5-cyclopropyl-1H-pyrazol-3-yl)-5-fluoro-N2-(1-(4-fluorophenyl)ethyl)pyridine-2,6-diamine (Example 3, 0.10 g, 0.26 mmol) in THF (5 ml) at room temperature was added 1.1 equivalent of trifluoromethylsulfonyl chloride loaded TFP resin, and DMAP (0.031 g, 0.26 mmol). The reaction was then stirred at room temperature for 15 hours and filtered. The remaining resin was then washed with THF (2×10 ml for 20 min), and then combined organic fractions were concentrated. The resulting oil was purified by reverse-phase column chromatography (5-50% ACN) to give the title compound (0.02 g, 15%). 1H NMR (400 MHz, CD3OD) δ7.40-7.37 (m, 2H), 7.17 (d, J=10.9 Hz, 1H), 7.02-6.97 (m, 2H), 5.90-5.60 (br s, 1H), 5.14-5.12 (m, 1H), 4.28-4.25 (m, 2H), 1.88-1.84 (m, 1H), 1.54 (d, J=7.0 Hz, 3H), 0.95-0.93 (m, 2H), 0.67-0.64 (m, 2H). MS: Calcd.: 516. Found: [M+H]+ 517.

Provenance & Evidence