HRID1838887
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
4.6 ml of perfluorobutane-1-sulphonyl fluoride are added dropwise at 0° C. to 5.0 g of 11α-hydroxyoestr-4-ene-3,17-dione in 100 ml of toluene and 7.3 ml of 1,8-diazabicyclo[5.4.0]undec-7-ene. After 30 min, the solution is diluted with ethyl acetate, washed with saturated sodium chloride solution, dried and concentrated in vacuo. After chromatographing the crude product on silica gel using a hexane-ethyl acetate gradient, 3.8 g of 11β-fluorooestr-4-ene-3,17-dione of melting point 173-174° C. are obtained.
WORKUP
后处理
- washwashed with saturated sodium chloride solution
- customdried
- concentrationconcentrated in vacuo
- customare obtained