Conclusions
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1.
Chlorine fluorosulfate is more active than bromine fluorosulfate in the substitution reaction of halogen atom in alkyl halides by the fluorosulfate group.
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2.
In a fluorosulfonic acid medium containing antimony pentafluoride, the reaction with chlorine fluorosulfate leads to the substitution of the primary chlorine atom in perfluoro-alkyl chlorides, and also the primary and secondary bromine atoms in perfluoroalkyl bromides by the fluorosulfate group under mild conditions.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1635–1638, July, 1985.
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Fokin, A.V., Studnev, Y.N., Rapkin, A.I. et al. Reactions of chlorine and bromine fluorosulfates with perfluoroalkyl halides in a strongly acidic medium. Russ Chem Bull 34, 1495–1498 (1985). https://doi.org/10.1007/BF00950154
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DOI: https://doi.org/10.1007/BF00950154