HRID732601

反应详情

EQUATION

反应方程式

HRID 732601 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

Add to a solution of (2R,4R)-2-[(1S,2S)-2-acetylamino-3-(3,5-difluorophenyl)-1-hydroxypropyl]-4-(4-methoxy-benzyloxy)-pyrrolidine-1-carboxylic acid tert-butyl ester (5.64 g, 10.55 mmol) in dichloromethane (25 mL) and acetone (25 mL) p-toluene sulfonic acid pyridine salt (0.245 g, 1 mmol) and 2-methoxy propene (4.6 mL, 49 mmol). Stir 60 min and concentrate. Dissolve in ethyl acetate and wash with saturated aqueous sodium bicarbonate, saturated aqueous sodium chloride, dry (magnesium sulfate) and purify (silica gel chromatography, eluting with hexanes/ethyl acetate mixtures) to give the title compound as a foam (3.49 g, 61%).

WORKUP

后处理

  1. concentrationconcentrate
  2. dissolutionDissolve in ethyl acetate
  3. washwash with saturated aqueous sodium bicarbonate, saturated aqueous sodium chloride
  4. dry with materialdry (magnesium sulfate)
  5. custompurify
  6. wash(silica gel chromatography, eluting with hexanes/ethyl acetate mixtures)