FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing an acyl fluoride of difluoro(fluorosulphate)acetic acid while heating perfluoroallyl fluorosulphate in a reactor to temperature of 175-220°C, feeding oxygen into the reactor in an amount which exceeds the calculated amount for oxidation of the perfluoroallyl fluorosulphate double bond by 2-5 times, and holding the reaction mixture at temperature of 175-220°C for 2-5 hours.
EFFECT: method is simple, is realised in a single step, enables to obtain a pure end product with high output and does not require a long process.
4 ex
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