反应详情

203 parts by weight of thionyl chloride and 1 drop of pyridine are added to a mixture of 352 part by weight of 3-(1',1',2',2'-tetrafluoroethoxy)-benzoic acid in 900 parts by volume of 1,2-dichloroethane. After stirring the mixture for 4 hours under reflux and concentrating it under reduced pressure, 359 parts by weight (yield: 95% of theory) of 3-(1',1',2',2'-tetrafluoroethoxy)-benzoyl chloride, of nD 25 =1.4660, are obtained. The IR spectrum shows C=O bands at 1770 and 1748 cm-1, and fluoroalkoxy bands at 1225, 1190 and 1125 cm-1.

1. temperatureunder reflux