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HRID6028

反应详情

EQUATION

反应方程式

HRID 6028 的结构方程式

REACTANTS

反应物

2
结构：Br
HCID260

Hydrogen Bromide

BrH

结构：CC(=O)OC1SC[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O
HCID10991244

未命名化合物

PRODUCTS

生成物

1
结构：CC(=O)O[C@@H]1[C@@H](OC(C)=O)[C@H](OC(C)=O)CS[C@H]1Br
HCID10948230

未命名化合物

收率 39%

AUXILIARIES

试剂、催化剂与溶剂

2
结构：CC(=O)O
溶剂HCID176

Acetic Acid

C2H4O2

结构：CC(Cl)Cl
溶剂HCID6365

1,1-Dichloroethane

C2H4Cl2

PROCEDURE

实验过程

3.50 ml of a 30% solution of hydrobromic acid in glacial acetic acid are added at 10° C. to a solution of 2.10 g (6.3.10-3 mol) of 1,2,3,4-tetra-O-acetyl-5-thio-D-xylopyranose in 10 cm3 of dichloroethane. After 2 to 3 h, the reaction medium is hydrolyzed, washed with a solution of sodium bicarbonate and dried over sodium sulfate (Na2SO4) and the solvent is evaporated off to dryness under reduced pressure. 0.87 g (yield: 39%) of the expected product is obtained after precipitation in ether.

WORKUP

后处理

  1. washwashed with a solution of sodium bicarbonate
  2. dry with materialdried over sodium sulfate (Na2SO4)
  3. customthe solvent is evaporated off to dryness under reduced pressure