Kinetics of oxidation of aliphatic ketones with bromamine-T in acid medium.

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概要

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• The kinetics of oxidation of 2-propanone, 2-butanone, 2-pentanone, 3-pentanone, and 4-methyl-2-pentanone by sodium salt of <I>N</I>-bromo-<I>p</I>-toluenesulfonamide or bromamine-T (BAT) in presence of HClO<SUB>4</SUB> was studied at 30 °C. The rate law is:<BR>−\fracd[BAT]d<I>t</I>=<I>k</I>[BAT]<SUP>0</SUP>[ketone]<SUP>1</SUP>[H<SUP>+</SUP>]<SUP>1</SUP>.<BR>Variation of ionic strength of medium or addition of reaction product <I>p</I>-toluenesulfonamide have no effect on the rate. The dielectric effect is positive. The acid-catalyzed enolization of ketone is assumed to be the rate-limiting step and enolization rate coefficients have been calculated. Proton inventory studies made in H<SUB>2</SUB>O–D<SUB>2</SUB>O mixtures have been employed to calculate the isotopic fractionation factors. Isokinetic temperature is 320 K indicating enthalpy as a controlling factor.

• 公益社団法人 日本化学会の論文

著者

• Swamy Putta

  Department of Chemistry, University of Mysore

関連論文

• Kinetics of oxidation of aliphatic ketones with bromamine-T in acid medium.

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