| abstract |
【Task】 Provided are a method for purifying desflurane and a method for producing desflurane which can obtain high purity desflurane. [Solution means] Formula (1) [Chemical formula 1] In which a mixture containing difluoromethyl-1,2,2,2-tetrafluoroethyl ether represented by and a trihalomethane is brought into contact with a base in the presence of a phase transfer catalyst to decompose the trihalomethane. Purification method of 2,2,2-tetrafluoroethyl ether. From desflurane containing trihalomethane, only by-product trihalomethane, which is a by-product, can be decomposed without degradation of desflurane to obtain highly pure desflurane. 【Selection chart】 None |