HRID637885

反应详情

EQUATION

反应方程式

HRID 637885 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

To a solution of methyl 22-(2-hydroxy-3,4-dimethoxy-6-methylphenyl)docosanoate (3 g) in tetrahydrofuran (30 ml) is added lithium aluminum hydride and the mixture is stirred at room temperature for 1 hour. Under ice-cooling, 10% aqueous solution of sulfuric acid is added to the reaction mixture. The mixture is subjected to extraction with ether. The extract is washed with water and dried. The solvent is distilled off under reduced pressure, whereby 6-(22-hydroxydocosyl)-2,3-dimethoxy-5-methylphenol is obtained as colorless needles. m.p. 78° C.-81° C.

WORKUP

后处理

  1. temperatureUnder ice-cooling
  2. extractionThe mixture is subjected to extraction with ether
  3. washThe extract is washed with water
  4. customdried
  5. distillationThe solvent is distilled off under reduced pressure