反应详情

To a solution of 5-bromo-2-pyrimidine carboxylic acid (6 g, 29.6 mmol) in MeOH (300 mL) was added Et3N (5.98 g, 59.2 mmol). The mixture was cooled to 0 degrees Celsius, and sulfonyl chloride (5.3 g, 44.4 mmol) was added dropwise to the solution. After addition, the mixture was stirred at rt for 12 hours. The solvent was removed and the residue was dissolved in ethyl acetate. The organic layer was washed with sodium bicarbonate, brine, and dried with sodium sulfate. The solvent was removed to give the pure product. MS: calc'd 217 (MH+), exp 217 (MH+).

1. temperatureThe mixture was cooled to 0 degrees Celsius
2. additionAfter addition
3. customThe solvent was removed
4. dissolutionthe residue was dissolved in ethyl acetate
5. washThe organic layer was washed with sodium bicarbonate, brine
6. dry with materialdried with sodium sulfate
7. customThe solvent was removed
8. customto give the pure product