HRID1076836

反应详情

EQUATION

反应方程式

HRID 1076836 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A hot solution of 5-methoxy-2-[4-(2-pyrrolidin-1-ylethoxy)anilino]benzothiazole (0.738 g.) in ethanol (45 ml.) is treated with a hot solution of citric acid (0.384 g.) in ethanol (2.5 ml.). The solution is allowed to cool to room temperature and then kept at 0° - 10°C. overnight. The precipitate which forms is collected by filtration, washed with ethanol and dried to give 5-methoxy-2-[4-(2-pyrrolidin-1-ylethoxy)anilino]benzothiazole citrate, m.p. 155° - 156°C. (dec.) with previous softening. Elemental analysis satisfactory for C26H31N3O9S.

WORKUP

后处理

  1. filtrationThe precipitate which forms is collected by filtration
  2. washwashed with ethanol
  3. customdried