N-Methylethylamine → 6-{[Ethyl(methyl)amino]methyl}-2-(trifluoromethyl)pyrimidine-4-carboxylic acid

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Reaction Steps

N-methylethanamine (96 μL, 1.1 mmol) was added to a solution of ethyl 6-(bromomethyl)-2-(trifluoromethyl)pyrimidine-4-carboxylate (0.13 g, 0.28 mmol, prepared as in Example 5, Step A) in methylene chloride (2.6 mL). After stirring for 30 minutes, solvent was removed in vacuo. The ester was hydrolyzed by stirring with lithium hydroxide monohydrate (0.12 g, 2.8 mmol) in tetrahydrofuran (4 mL) and water (2 mL) for 1 hour. 1N HCl was added dropwise to adjust the pH to 7. Purification via preparative HPLC-MS (C18 eluting with a gradient of MeCN/H2O containing 0.15% NH4OH) afforded product. Yield: 0.043 g (58%); LC-MS: 264.1 (M+H)+. 1H NMR (300 MHz, DMSO-d6): δ 8.03 (s, 1H), 3.75 (s, 2H), 2.51 (q, 2H), 2.22 (s, 3H), 1.05 (t, 3H).

Provenance & Evidence