HRID1838887

反应详情

EQUATION

反应方程式

HRID 1838887 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

3

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

  1. washwashed with saturated sodium chloride solution
  2. customdried
  3. concentrationconcentrated in vacuo
  4. customare obtained