HRID66035

反应详情

EQUATION

反应方程式

HRID 66035 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A 6.6 g portion of 8-amino-1,3,6-naphthalenetrisulfonic acid trisodium salt and 2.92 g of sodium acetate trihydrate are dissolved in 180 ml of water at 2° C. A 4.0 g portion of 3-nitrosulfobenzoic anhydride is added with stirring. A 400 ml portion of water is added and the mixture is allowed to stand 21/2 hours, filtered and the filtrate is cooled, acidified with 2-3 ml of hydrochloric acid and diluted with ethanol. The pink solid is collected by filtration, washed with 85% ethanol, ether and dried giving 2.5 g of 8-(3-nitro-2-sulfobenzamido)-1,3,6-naphthalene trisulfonic acid, tetrasodium salt.

WORKUP

后处理

  1. custom2 hours
  2. filtrationfiltered
  3. temperaturethe filtrate is cooled
  4. additiondiluted with ethanol
  5. filtrationThe pink solid is collected by filtration
  6. washwashed with 85% ethanol, ether
  7. customdried