HRID732601
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
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
- concentrationconcentrate
- dissolutionDissolve in ethyl acetate
- washwash with saturated aqueous sodium bicarbonate, saturated aqueous sodium chloride
- dry with materialdry (magnesium sulfate)
- custompurify
- wash(silica gel chromatography, eluting with hexanes/ethyl acetate mixtures)