反应详情

To an oven-dried flask under N2 was added 2,4-dichloro-5-fluoropyrimidine (1.56 g, 9.4 mmol), anhydrous, degassed THF (100 mL), dichlorobis(triphenyl-phosphine)palladium(II) (62 mg, 0.09 mmol), copper(I) iodide (10 mg, 0.05 mmol), and triethylamine (0.164 g, 0.23 mmol). After heating the reaction at 60° C. for 30 min, N-(3-ethynylphenyl)-2,2,2-trifluoroacetamide (1.0, 4.69 mmol) was added dropwise as a solution in THF (25 mL) and the resulting mixture was allowed to heat overnight. The crude reaction mixture was adsorbed to silica gel and purified by column chromatography (2-10% EtOAc in hexanes) to afford the desired product (1.25 g, 78%) as an off-white solid. ESIMS (M+H)+=344.

1. temperatureAfter heating
2. customthe reaction at 60° C. for 30 min
3. temperatureto heat overnight
4. customThe crude reaction mixture
5. custompurified by column chromatography (2-10% EtOAc in hexanes)