Methanesulfonic Acid → HCID 178458648, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A round bottom flask was charged with (S)-3-(aminomethyl)-5-fluoro-N2-(1-(4-fluorophenyl)ethyl)-N6-(5-isopropoxy-1H-pyrazol-3-yl)pyridine-2,6-diamine (Example 18; 0.10 g, 0.25 mmol), methanesulfonic acid loaded TFP resin (0.9 mmol/g loading, 0.25 mmol), DIEA (0.064 g, 0.50 mmol), DMAP (0.033 g, 0.27 mmol), and THY (5 ml). The resulting suspension was shaken vigorously at 60° C. for 8 hrs and filtered. 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 (0.82 g, 67%). 1H NMR (400 MHz, CD3OD) δ 7.44-7.41 (m, 2H), 7.17 (d, J=10.7 Hz, 1H), 7.02-6.97 (m, 2H), 5.26 (s, 1H), 5.01-4.99 (m, 1H), 4.56-4.53 (m, 1H), 4.16-4.08 (m, 1H), 3.01 (s, 3H), 1.52 (d, J=7.0 Hz, 3H), 1.31 (d, J=6.0 Hz, 6H). MS: Calcd.: 480. Found: [M+H]+ 481.

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