反应详情

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0 °C

To a solution of trans-4-(t-butyldimethylsilyloxymethyl)-2-(diethyloxyphosphinoyl)-1,3-dithiolane (example 49) (9.84 g, 25.46 mmol) in anhydrous methanol (150 mL) was added acetyl chloride (12 drops) at 0° C. The solution was stirred at 0° C. for 30 min and then at room temperature for 3.5 hrs. A saturated solution of ammonium chloride (5 drops) was added and the solution was stirred for 15 min followed by evaporation of the solvents. The crude material was purified by flash chromatography with a mixture of dichloromethane and methanol (94:6) to give a white solid (5.97 g) in 86% yield.

1. waitat room temperature for 3.5 hrs
2. stirringthe solution was stirred for 15 min
3. customfollowed by evaporation of the solvents
4. customThe crude material was purified by flash chromatography with a mixture of dichloromethane and methanol (94:6)