反应详情

温度

0 °C

To a solution of butane 2,3-diol (15 g, 0.166 mol) and Et3N (57.7 mL, 0.415 mol) in CH2Cl2 (150 mL) at 0° C. was slowly added a solution of CH3SO2Cl (32.1 mL, 0.415 mol) in CH2Cl2 (75 mL). The mixture was stirred at 0° C. for 2 h and diluted with CH2Cl2. The mixture was washed with water, 1N HCl, 5% aqueous NaHCO3 and brine. The organic layer was dried over MgSO4, filtered and concentrated under reduced pressure to afford butane-2,3-diol dimethanesulfonate (40 g, 98%) as a light yellow oil. 1HNMR (CDCl3): δ 4.9 (m, 2H, CH), 3.05 (s, 6H, CH3), 1.4 (m, 6H, CH3).

1. washThe mixture was washed with water, 1N HCl, 5% aqueous NaHCO3 and brine
2. dry with materialThe organic layer was dried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure