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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/115/01/0075-0082

    • Keywords

       

      Aliphatic alcohols; hydride ion transfer; quinolinium bromochromate

    • Abstract

       

      Oxidation of nine aliphatic primary alcohols by quinolinium bromochromate (QBC) in dimethylsulphoxide leads to the formation of the corresponding aldehydes. The reaction is first order with respect to both QBC and the alcohol. The reaction is catalysed by hydrogen ions. The hydrogen-ion dependence has the form:kobs = a + b[H+]. The oxidation of [1,1-2H2]ethanol (MeCD2OH) exhibits a substantial primary kinetic isotope effect. The reaction has been studied in nineteen different organic solvents. The solvent effect was analysed using Taft’s and Swain’s multiparametric equations. The rate of oxidation is susceptible to both polar and steric effects of the substituents. A suitable mechanism has been proposed.

    • Author Affiliations

       

      Sonu Saraswat1 Vinita Sharma1 K K Banerji1

      1. Department of Chemistry, JNV University, Jodhpur - 342 005, India
    • Dates

       
  • Journal of Chemical Sciences | News

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