• Title, Summary, Keyword: tautomeric equilibrium constant

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The Effect of Solvent Density on the Ethyl Acetoaceate Tautomerism (에틸 아세토아세테이트 토토머리즘 평형 상수의 밀도 의존성)

  • Park, YoonKook
    • Applied Chemistry for Engineering
    • /
    • v.17 no.3
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    • pp.291-295
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    • 2006
  • The keto-enol tautomeric equilibrium constant, K, of ethyl acetoacetate in compressed and supercritical carbon dioxide was determined by using FT-IR (Fourier transform infrared) spectroscopy at three different temperatures. In order to investigate the effect of solvent density, the $CO_{2}$ pressure was systematically changed at a constant temperature. As the $CO_{2}$ density is increased, the amount of keto tautomer is increased, causing the K value to decrease. The modified lattice fluid hydrogen bonding theory has been applied to investigate the effect of density on the K.