Conclusions
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1.
The bromination of fluoroalkyl-substituted β-ketoesters using bromine gives unstable α-bromo derivatives which undergo intermolecular rearrangement to yield the starting β-ketoesters and α,α-dibromo-β-ketoesters.
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2.
An IR spectroscopic and dipole moment study showed that the z- and q-conformers relative to the ester C=0 bond are equally probable for the fluoroalkyl-substituted β-ketoesters.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1106–1114, May, 1984.
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Saloutin, V.I., Skryabina, Z.É., Rudaya, M.N. et al. Halogenation of fluoroalkyl-substituted β-ketoesters. Russ Chem Bull 33, 1016–1022 (1984). https://doi.org/10.1007/BF01141716
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DOI: https://doi.org/10.1007/BF01141716