反应详情

温度

70 °C

To 2.53 g (19.4 mmol) of 2-chloro-5-hydroxypyrimidine, a solution of 5.95 g (19.8 mmol) of 5-(toluenesulfonyloxymethyl)-2,2-dimethyl-1,3-dioxane in 11 ml of N-methylpyrrolidone and 6.50 g (19.9 mmol) of cesium carbonate were added, and the reaction mixture was stirred at 70° C. for 3.5 hours. After completion of the reaction, the reaction solution was poured into water and extracted with ethyl acetate twice. The obtained organic layers were combined, washed with water and saturated sodium chloride aqueous solution in order and dried with anhydrous sodium sulfate, and then the solvent was distilled off under reduced pressure. tert-Butyl methyl ether was added to the obtained residue, and the precipitate was obtained by filtration to provide 3.72 g of the title compound as a white solid (yield: 74%).

1. customAfter completion of the reaction
2. extractionextracted with ethyl acetate twice
3. washwashed with water and saturated sodium chloride aqueous solution in order
4. dry with materialdried with anhydrous sodium sulfate
5. distillationthe solvent was distilled off under reduced pressure
6. additiontert-Butyl methyl ether was added to the obtained residue
7. customthe precipitate was obtained by filtration