HRID65904

反应详情

EQUATION

反应方程式

HRID 65904 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

CONDITIONS

反应条件

温度
57 °C

PROCEDURE

实验过程

A mixture of 4.35 g of 3,3'-[(5-nitro-1,3-phenylene)bis(carbonylimino)]bis[2,7-naphthalenedisulfonic acid] tetrasodium salt in 100 ml of water is heated to 57° C. A 2.07 g portion of sodium sulfide nonahydrate is added and the reaction is allowed to cool. The reaction is reheated to 67° C. and allowed to cool. The mixture is filtered and the filtrate is acidified to pH 4 using acetic acid. The mixture is heated and then filtered with added diatomaceous earth. Upon cooling the filtrate yields a solid which is filtered, washed with 50% ethanol, absolute ethanol and finally with ether giving 3,3'-[(5-amino-1,3-phenylene)bis(carbonylimino)]bis[2,7-naphthalenedisulfonic acid] tetrasodium salt.

WORKUP

后处理

  1. temperatureto cool
  2. customis reheated to 67° C.
  3. temperatureto cool
  4. filtrationThe mixture is filtered
  5. temperatureThe mixture is heated
  6. filtrationfiltered
  7. additionwith added diatomaceous earth
  8. temperatureUpon cooling the filtrate
  9. customyields a solid which
  10. filtrationis filtered
  11. washwashed with 50% ethanol, absolute ethanol and finally with ether