反应详情

4-Hydroxymethyl-2-[2-(4-trifluoromethyl-phenyl)-vinyl]-oxazole (0.538 g, 2.0 mmol) is dissolved in anhydrous tetrahydrofuran (THF) (10 ml) followed by the addition of NaOtBu (0.231 g, 2.4 mmol). After stirring for 15 min at r.t., 5-bromo-2-chloro-pyrimidine (0.426 g, 2.2 mmol) in THF (5 ml) is added slowly over a period of 10 min and stirred for further 30 min at r.t. Chloroform (25 ml) is added; the mixture is washed with 0.5N hydrochloric acid (HCl) and water, dried over MgSO4 and concentrated in vacuo. After flash column chromatography (100% chloroform) 5-bromo-2-{2-[2-(4-trifluoromethyl-phenyl)-vinyl]-oxazol-4-yl-methoxy}-pyrimidine can be isolated as an off-white solid. Yield 0.60 g (71%).

1. stirringstirred for further 30 min at r.t
2. washthe mixture is washed with 0.5N hydrochloric acid (HCl) and water
3. dry with materialdried over MgSO4
4. concentrationconcentrated in vacuo