反应详情

To a solution of dodecyl 2-hydroxy-4-(methylthio)butanoate (20 g, 62.8 mmol) in methanol (100 mL) was added 30% hydrogen peroxide (20.0 mL, 176 mmol) at 0° C. The ice bath was removed and the reaction was stirred at room temperature for about 3 hrs. The reaction was mildly exothermic. Analysis indicated the reaction was completed within two hours. Water (400 mL) was added to the mixture. The mixture was extracted with EtOAc (2×100 mL). The extracts were combined and washed with a 10% sodium bisulfite solution (100 mL). The organic phase was dried with anhydrous magnesium sulfate and the solvent was evaporated with a rotary evaporator. A colorless viscous liquid was obtained which solidified upon standing to give a white solid (20.6 g, 98%). 1H NMR (500 MHz, DMSO-d6) δ ppm 0.86 (t, J=6.83 Hz, 3 H) 1.20-1.34 (m, 18 H) 1.53-1.62 (m, 2 H) 1.81-1.92 (m, 1 H) 1.98-2.07 (m, 1 H) 2.53 (d, J=4.13 Hz, 3 H) 2.60-2.90 (m, 2 H) 3.99-4.11 (m, 2 H) 4.12-4.19 (m, 1 H) 5.63 (dd, J=5.88, 2.38 Hz, 1 H). m/z 335 (MH+).

1. customThe ice bath was removed
2. waitwas completed within two hours
3. additionWater (400 mL) was added to the mixture
4. extractionThe mixture was extracted with EtOAc (2×100 mL)
5. washwashed with a 10% sodium bisulfite solution (100 mL)
6. dry with materialThe organic phase was dried with anhydrous magnesium sulfate
7. customthe solvent was evaporated with a rotary evaporator
8. customA colorless viscous liquid was obtained which