HRID706415

反应详情

EQUATION

反应方程式

HRID 706415 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A suspension of Pemetrexed in EtOH containing 0% to 2% water (v/v) is heated to reflux and 1.85 eq of aq. NaOH (30% w/w) are added. The mixture is stirred at reflux until PXRD shows complete conversion. 0.15 eq of aq. NaOH (30% w/w) are added and stirring under reflux is continued for 2 h before the suspension is cooled to 20° C. to 30° C. Pemetrexed Disodium Form IV is isolated by filtration, washed with EtOH and dried in vacuo to constant weight.

WORKUP

后处理

  1. temperatureis heated
  2. temperatureto reflux
  3. temperatureat reflux until PXRD
  4. stirringstirring
  5. temperatureunder reflux
  6. temperatureis cooled to 20° C. to 30° C