Conclusions
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1.
The addition of chlorine or bromine to the C=C double bond of highly electrophilic fluorine-containing unsaturated compounds such as perfluoroisobutylene and the acid fluoride and esters of perfluoromethacrylic acid is facilitated by the use of a polar solvent (acetonitrile) and is significantly accelerated by base catalysis using pyridine.
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2.
N,N-Dialkylamides of perfluoromethacrylic acid and esters of pentafluoroisopropenylphosphonic acid readily add chloride in carbon tetrachloride in the absence of a catalyst.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1116–1122, May, 1984.
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Zeifman, Y.V., Lantseva, L.T., Kadyrov, A.A. et al. Halogenation of highly electrophilic fluorine-containing unsaturated compounds. Russ Chem Bull 33, 1025–1031 (1984). https://doi.org/10.1007/BF01141718
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DOI: https://doi.org/10.1007/BF01141718