反应详情

To a solution of ethyl 6-(bromomethyl)-2-(trifluoromethyl)pyrimidine-4-carboxylate (0.15 g, 0.32 mmol, prepared as in Example 5, Step A) in methylene chloride (3.0 mL) was added N-ethylethanamine (0.13 mL, 1.3 mmol). After 30 minutes, the solvent was removed in vacuo. The ester was hydrolyzed by stirring with lithium hydroxide monohydrate (0.12 g, 3.0 mmol) in a mixture of tetrahydrofuran (5 mL) and water (2 mL). After 1 hour, 1N HCl was added dropwise to neutralize. Purification via preparative HPLC-MS (C18 eluting with a gradient of MeCN/H2O containing 0.15% NH4OH) afforded product as a light yellow solid. Yield: 0.050 g (60%); LC-MS: 278.0 (M+H)+. 1H NMR (400 MHz, DMSO-d6): δ 7.97 (s, 1H), 3.74 (s, 2H), 2.52 (q, 4H), 0.99 (t, 6H).

1. customthe solvent was removed in vacuo
2. waitAfter 1 hour
3. customPurification via preparative HPLC-MS (C18
4. washeluting with a gradient of MeCN/H2O containing 0.15% NH4OH)
5. customafforded product as a light yellow solid