HRID263093

反应详情

EQUATION

反应方程式

REACTANTS

反应物

HCID313

Hydrochloric Acid

ClH

HCID24408

Bromine

Br2

结构：OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O

HCID440995

(+)-Lactose

C12H22O11

PRODUCTS

生成物

结构：O=C[C@H](O)[C@@H](O)[C@@H](O)[C@H](O)CO

HCID3037556

(2R,3S,4S,5R)-2,3,4,5,6-pentahydroxyhexanal

C6H12O6

AUXILIARIES

试剂、催化剂与溶剂

溶剂HCID962

Water

H2O

CONDITIONS

反应条件

温度: 35 °C

PROCEDURE

实验过程

To a solution of 50 g whey lactose in 150 ml of water there is added 1 ml of concentrated hydrochloric acid and 1/2 g of bromine. The mixture is heated to about 35° C. on a water bath. After a reaction period of about 1 hour under stirring, the solution becomes completely clear. The D-galactose is separated by evaporation in vacuo and is precipitated in the form of white crystals.

WORKUP

后处理

customAfter a reaction period of about 1 hour
customThe D-galactose is separated by evaporation in vacuo
customis precipitated in the form of white crystals