HRID4466

反应详情

EQUATION

反应方程式

HRID 4466 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

In 3 ml of acetic acid, 100 mg of TPC-A was dissolved and a solution of copper nitrate (40 mg) in 3 ml of acetic acid was added under stirring. When the color change of the reaction solution from blue to green took place under the continuation of stirring, water was added to cease the reaction and the product was extracted with ethyl acetate. After washing the extract with saturated sodium chloride solution and drying the extract over anhydrous magnesium sulfate, the extract was subjected to distillation to remove solvent, in vacuo and the product was recrystallized from methanol to obtain nitro compound of TPC-A at α-position of phenol thereof (108 mg) as yellow needle crystal having m.p. of 244°-250° C. (decomp) and [α]D22 of -232° (CHCl3).

WORKUP

后处理

  1. stirringof stirring
  2. customthe reaction
  3. extractionthe product was extracted with ethyl acetate
  4. washAfter washing the
  5. extractionextract with saturated sodium chloride solution
  6. customdrying the
  7. extractionextract over anhydrous magnesium sulfate
  8. distillationthe extract was subjected to distillation
  9. customto remove solvent
  10. customin vacuo and the product was recrystallized from methanol