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Issue 6, 1988
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1,1,1-Trifluoropropan-2-one and 1,1,1-trifluoropentane-2,4-dione in hydrogen bromide–dibromodifluoromethane; evidence for the formation of α-bromo alcohols

Abstract

N.m.r. analysis of solutions of 1,1,1-trifluoropropan-2-one (TFP) and 1,1,1-trifluoropentane-2,4-dione (TFPD) in the strong acid system HBr–CBr2F2 shows the formation of the 2-bromo alcohol analogues of TFP and TFPD at temperatures below 250 K. In the latter system equilibrium constants for the formation of the bromo alcohol at various temperatures and acid ratios have been measured, from which the enthalpy of formation, ΔH°=–25.2 kJ mol–1, has been calculated. 1,1,1,5,5,5-Hexafluoropentane-2,4-dione (HFPD) does not react to form a bromo alcohol.

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Article type: Paper
DOI: 10.1039/P29880001107
Citation: J. Chem. Soc., Perkin Trans. 2, 1988,0, 1107-1110
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    1,1,1-Trifluoropropan-2-one and 1,1,1-trifluoropentane-2,4-dione in hydrogen bromide–dibromodifluoromethane; evidence for the formation of α-bromo alcohols

    D. R. Clark, J. Emsley and F. Hibbert, J. Chem. Soc., Perkin Trans. 2, 1988, 0, 1107
    DOI: 10.1039/P29880001107

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