异丙托溴铵EP杂质L

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To ethyl 3-hydroxy-2-phenylpropionate (2.55 g, 13.1 mmol) in dichloromethane (15 ml), SOCl2 (1.87 g, 15.7 mmol) in dichloromethane (1 ml) was added while chilling with ice. After the resulting solution was stirred to cause reaction at room temperature for 3 hours, saturated aqueous sodium bicarbonate was added while chilling with ice. The prepared solution was extracted with dichloromethane, and the extract was washed with saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate. Subsequently, the solvent was removed by distillation under reduced pressure to obtain a crude product. The product was purified by silica gel column chromatography using acetone/hexane=1/3 to obtain 1.27 g of the titled compound as a colorless oil (yield: 45.5%). while chilling with ice reaction at room temperature for 3 hours while chilling with ice The prepared solution was extracted with dichloromethane the extract was washed with saturated aqueous sodium chloride dried over anhydrous sodium sulfate Subsequently, the solvent was removed by distillation under reduced pressure to obtain a crude product The product was purified by silica gel column chromatography

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To ethyl 3-hydroxy-2-phenylpropionate (2.55 g, 13.1 mmol) in dichloromethane (15 ml), SOCl2 (1.87 g, 15.7 mmol) in dichloromethane (1 ml) was added while chilling with ice. After the resulting solution was stirred to cause reaction at room temperature for 3 hours, saturated aqueous sodium bicarbonate was added while chilling with ice. The prepared solution was extracted with dichloromethane, and the extract was washed with saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate. Subsequently, the solvent was removed by distillation under reduced pressure to obtain a crude product. The product was purified by silica gel column chromatography using acetone/hexane=1/3 to obtain 1.27 g of the titled compound as a colorless oil (yield: 45.5%). while chilling with ice reaction at room temperature for 3 hours while chilling with ice The prepared solution was extracted with dichloromethane the extract was washed with saturated aqueous sodium chloride dried over anhydrous sodium sulfate Subsequently, the solvent was removed by distillation under reduced pressure to obtain a crude product The product was purified by silica gel column chromatography