Triethylamine → ethyl 3-(3-tert-butyl-5-{[(2-fluoro-4-{[2-(methylcarbamoyl)-pyridin-4-yl]oxy}phenyl)carbamoyl]amino}-1H-pyrazol-1-yl)benzoate

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A solution of ethyl 3-{3-tert-butyl-5-[(phenoxycarbonyl)amino]-1H-pyrazol-1-yl}benzoate (9.36 g, 22.0 mmol), 4-(4-amino-3-fluorophenoxy)-N-methylpyridine-2-carboxamide (5.0 g, 19.1 mmol; prepared as described in Dumas et al., PCT Int. Appl. WO 2004078748 (2004)) and triethyl amine (3.87 g, 38.3 mmol) in anhydrous THF (100 mL) was stirred at room temperature overnight. The crude product was purified by column chromatography (CH2Cl2 plus 1% to 3% of 2M NH3 in MeOH), followed by recrystallization from EtOAc/hexanes to give the desired product as an off-white crystalline solid (6.32 g, 57%). MS m/z 575.1 (M+H)+; calcd. mass 574. Retention time (LC-MS): 3.75 min. 1H-NMR (DMSO-d6): δ 8.97 (m, 1H); 8.89 (m, 1H); 8.80 (m, 1H); 8.52 (d, J=5.6 Hz, 1H); 8.16 (t, 1H); 8.06 (m, 1H); 7.99 (m, 1H); 7.85 (m, 1H); 7.71 (t, 1H); 7.39 (m, 1H); 7.33 (m, 1H); 7.17 (m, 1H); 7.06 (m, 1H); 6.42 (s, 1H); 4.36 (q, 2H); 2.78 (d, J=5.2 Hz, 3H); 1.31 (m, 12H).

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