Dichloromethane → 2-[4-(5-ethoxy-6-oxo-1H-pyridin-3-yl)-2-fluorophenyl]-N-[3-(1H-pyrazol-4-yl)-5-(trifluoromethyl)phenyl]acetamide;hydrochloride

Participants

Reaction Conditions

Reaction Steps

To a mixture of N-(3-(1H-pyrazol-4-yl)-5-(trifluoromethyl)phenyl)-2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)acetamide (50 mg, 0.081 mmol) in DCM (10 mL) was added TFA (1 mL, 12.98 mmol). The mixture was stirred at 25° C. for 2 h. The mixture was concentrated and NH4OH (0.5 mL) was added. Then the reaction residue was concentrated and purified by preparative HPLC (Column: ASB C18 150*25 mm; Mobile phase A: Water+0.1% HCl; Mobile phaseB: MeCN; Flowrate: 25 mL/min; Gradient Profile Description: 40-70 (B %)) to yield an off-white solid of N-(3-(1H-pyrazol-4-yl)-5-(trifluoromethyl)phenyl)-2-(4-(5-ethoxy-6-oxo-1,6-dihydropyridin-3-yl)-2-fluorophenyl)acetamide hydrochloride (6.95 mg, 0.013 mmol, 15.9% yield): 1H NMR (400 MHz, CD3OD) δ 8.16 (s, 2H), 8.06 (s, 1H), 7.82 (s, 1H), 7.62 (s, 1H), 7.48-7.42 (m, 1H), 7.41-7.34 (m, 3H), 7.33 (s, 1H), 4.15 (q, J=7.2 Hz, 2H), 3.84 (s, 2H), 1.46 (t, J=7.2 Hz, 3H). ES-LCMS m/z 501.2 (M+H). TLC (DCM/MeOH=10:1, Rf=0.2)

Provenance & Evidence