HRID1973191
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
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
- temperatureThe product is refluxed for 3 hours
- customexcess thionyl chloride is removed in vacuo (steam bath/water aspirator pressure)
- customLast traces of thionyl chloride are removed by similar vacuum distillation with added benzene