HRID1995056

反应详情

EQUATION

反应方程式

HRID 1995056 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

2-Acetamido-3,4,6-tri-O-acetyl-D-glucopyranosyl chloride (18.3 g) and ethoxyquin (22.1 g) were vigourously stirred together at 80° for 3 hours. Acetone (50 ml) was added to the hot reaction mixture and stirring was continued for 0.5 hours. After cooling, the solid ethoxyquin-hydrochloride was filtered, washed with acetone and the combined filtrates were evaporated under reduced pressure. The crude product was purified by column chromatography on silica (ethylacetate-benzene 1:4). 16.5 g of 1-(2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-D-glucopyranosyl)-6-ethoxy-1,2-dihydro-2,2,4-trimethylquinoline were obtained. Analytical grade sample was obtained by recrystallisation from ether or isopropanol. m.p. 186°-187°.

WORKUP

后处理

  1. temperatureAfter cooling
  2. filtrationthe solid ethoxyquin-hydrochloride was filtered
  3. washwashed with acetone
  4. customthe combined filtrates were evaporated under reduced pressure
  5. customThe crude product was purified by column chromatography on silica (ethylacetate-benzene 1:4)