HRID1973191

反应详情

EQUATION

反应方程式

HRID 1973191 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

To 9.4 g. (30 mmoles) of 2,5-di-(2,2,2-trifluoroethoxy)benzoic acid are added 2 drops of dimethylformamide and 7.2 ml. (11.9 g., 100 mmoles) of purified thionyl chloride. The product is refluxed for 3 hours and excess thionyl chloride is removed in vacuo (steam bath/water aspirator pressure). Last traces of thionyl chloride are removed by similar vacuum distillation with added benzene. The product is 2,5-di-(2,2,2-trifluoroethoxy)benzoyl chloride according to infrared spectral measurement.

WORKUP

后处理

  1. temperatureThe product is refluxed for 3 hours
  2. customexcess thionyl chloride is removed in vacuo (steam bath/water aspirator pressure)
  3. customLast traces of thionyl chloride are removed by similar vacuum distillation with added benzene