反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
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 vigorously 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
- temperatureAfter cooling
- filtrationthe solid ethoxyquin-hydrochloride was filtered
- washwashed with acetone
- customthe combined filtrates were evaporated under reduced pressure
- customThe crude product was purified by column chromatography on silica (ethylacetate-benzene 1:4)