HRID1735738

反应详情

EQUATION

反应方程式

HRID 1735738 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

To a solution of 0.80 g of NaH2PO4.H2O, 1.70 g of Na2HPO4.12H2O and 0.12 ml of N,N-dimethylhydrazine in 200 ml of water a solution of 0.64 g of 3β,14β-dihydroxy-5β-androstane-17β-carboxaldehyde (Boutagy J. and Thomas R., Aust. J. Chem., 1971, 24, 2723) in 20 ml of dioxane was added dropwise at room temperature. After 1.5 hrs the solution was alkalinized with an acqueous solution of NaHCO3 and extracted with ethyl acetate; the organic layer was dried over anhydrous sodium sulfate and evaporated to dryness. The crude product was purified by flash-chromatography (SiO2) using cyclohexane/chloroform/acetone 4/3/3 as eluant to give 0.37 g of the title compound (I-ai), as a white foam.

WORKUP

后处理

  1. extractionextracted with ethyl acetate
  2. dry with materialthe organic layer was dried over anhydrous sodium sulfate
  3. customevaporated to dryness
  4. customThe crude product was purified by flash-chromatography (SiO2)