氯化亚锡的还原处理

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SnCl2(aq, 1.0 mL)and HCl (12 N, 1 mL) were then added, and thereafter, the mixturewas heated to re flux for 12 h. After the yellowish solution became colorless, ethyl acetate (40 mL) and water (40 mL) were added and,thereafter, potassium carbonate was used to adjust the pH to 9. The light yellow org anic layer w as separated from the solids by centrifugation, dried with magnesium sulfate, and then diluted with 100 mL of dichloromethane. Finally, white crystals (320 mg, yield 95%) were obtained by reprecipitation in ethyl acetate/dichloro-methane and drying under vacuum at 80 ° C. TLC: ethyl acetate/ligroin = 1/1, Rf= 0.5

氯化亚锡的还原处理

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