Potassium Carbonate → 2-(Pyrrolidin-1-yl)-4-(trifluoromethyl)-N-[[4-(trifluoromethyl)phenyl]methyl]pyrimidine-5-carboxamide

関与物質

反応手順

To a solution of 2-chloro-4-(trifluoromethyl)pyrimidine-5-carbonyl chloride (0.74 g, 3.0 mmol) in dichloromethane (5 mL), was added saturated sodium bicarbonate (5 mL) and 4-(trifluoromethyl)benzylamine (0.58 g, 3.3 mmol). The reaction mixture was stirred at room temperature for 3 hours. The precipitated white solid of 2-chloro-4-(trifluoromethyl)-N-[[4-(trifluoromethyl)phenyl]methyl]pyrimidine-5-carboxamide was collected by filtration and then dissolved in acetonitrile (10-15 mL). Potassium carbonate (0.62 g, 4.5 mmol) and pyrrolidine (0.43 g, 6 mmol)) were added. The reaction mixture was stirred at room temperature overnight. The inorganic salts were filtered off and the filtrate was concentrated in vacuo to provide the pure titled compound: MS m/e 419 (MH+). 1H NMR (DMSO-d6): δ 9.10 (t, J=5.9 Hz, 1H), 8.68 (s, 1H), 7.71 (d, J=8.1 Hz, 2H), 7.55 (d, J=8.0 Hz, 2H), 4.51 (d, J=6.1 Hz, 2H), 3.5-3.55 (m, br, 4H), 1.93-1.98 (m, 4H).

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