HRID1659855
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
Ethoxyquin (240 g) and 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide (228 g) were stirred at 80° for 18 hours. Acetone (200 ml) was added to the hot reaction mixture and stirring continued for an additional 20 minutes. After cooling, the solid ethoxyquin hydrobromide was filtered off, washed thoroughly with acetone and the combined acetone filtrates were evaporated under reduced pressure. The resulted crude product was recrystallised (iso-propanol) to yield 226.5 g of 1-(2,3,4,6-tetra-O-acetyl-D-glucopyranosyl)-6-ethoxy-1,2-dihydro-2,2,4-trimethylquinoline. m.p.: 180°-181°.
WORKUP
后处理
- temperatureAfter cooling
- filtrationthe solid ethoxyquin hydrobromide was filtered off
- washwashed thoroughly with acetone
- customthe combined acetone filtrates were evaporated under reduced pressure
- customThe resulted crude product
- customwas recrystallised (iso-propanol)