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  • Title: Enolization of acetone in superheated water detected via radical formation.
    Author: Ghandi K, Addison-Jones B, Brodovitch JC, McCollum BM, McKenzie I, Percival PW.
    Journal: J Am Chem Soc; 2003 Aug 13; 125(32):9594-5. PubMed ID: 12904018.
    Abstract:
    Muoniated free radicals have been detected in muon-irradiated aqueous solutions of acetone at high temperatures and pressures. At temperatures below 250 degrees C, the radical product is consistent with muonium addition to the keto form of acetone. However, at higher temperatures, a different radical was detected, which is attributed to muonium addition to the enol form. Muon hyperfine coupling constants have been determined for both radicals over a wide range of temperatures, significantly extending the range of conditions under which these radicals and the keto-enol equilibrium have been studied.
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