- SYNTHESIS AND SOME PROPERTIES OF TERTIARY PERFLUOROALKYL HALIDES
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It is shown for the first time that bromination and iodination of tertiary perfluorocarbanions are reversible.The tendency of tertiary perfluoroalkyl halides to undergo dehalofluorination under the influence of weak bases depends on the structure of the perfluoroalkyl halide, and increases in going from lower to higher halides and from linear to cyclic compounds.
- Pletnev, S. I.,Igumnov, S. M.,Zakharova, E. V.,Makarov, K. N.
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- SYNTHESIS AND CHEMISTRY OF PERFLUORO-2-IODO-2-METHYL-ALKANES
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Two novel perfluoro-tert-alkyl iodides CF3(CF2)n+1C(CF3)2I have been obtained from F-alkenes CF3(CF2)n-CF=C(CF3)2 (n = 0 and 1) by formal additions of iodine fluoride; these required substantial alterations of known procedures.The F-tert-alkyl iodides are the most reactive alkyl halides known so far, and they are also very toxic.The following types of reactions have been studied: (a) Nucleophilic attack of anions at the iodine, leading to F-alkenes, (b) elimination of iodine fluoride, caused by metals or metal complexes, (c) pyrolysis, to give very selectively F-isobutene and n-perfluoroalkyl iodides, (d) photolysis, and (e) thermally induced insertions into the carbon-iodine bond.Screening results on the inhalation toxicity of the iodides and of some other fluoro-compounds are also reported.
- Probst, A.,Raab, K.,Ulm, K.,Werner, K. von
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