Abstract
The kinetics of oxidation of benzyl alcohol (BzOH) by benzimidazolium fluorochromate (BIFC) has been studied in 50% aqueous acetic acid medium at 308 K. The reaction is first order with respect to [oxidant] and [benzyl alcohol]. The reaction is catalysed by hydrogen ions. The decrease in dielectric constant of the medium increases the rate of the reaction. Addition of sodium perchlorate increases the rate of the reaction appreciably. No polymerization with acrylonitrile. The reaction has been conducted at four different temperature and the activation parameters were calculated. From the observed kinetic results a suitable mechanism was proposed.
Highlights
Chromium compounds have been used in aqueous and non-aqueous medium for the oxidation of a variety of organic compounds[1]
In the present investigation, we have carried out the oxidation of benzyl alcohol by benzimidazolium fluorochromate (BIFC) in aqueous acetic acid medium and the corresponding mechanistic aspects are discussed in this research paper
Oxidation of benzyl alcohol by BIFC has been conducted in 50% (v/v) acetic acid-water medium at 308 K, under the pseudo-first order conditions and the observed results were discussed in the subsequent pages
Summary
Chromium compounds have been used in aqueous and non-aqueous medium for the oxidation of a variety of organic compounds[1]. Chromium compounds especially Cr(VI) reagents have been proved to be versatile reagents and capable of oxidizing almost all the oxidisible organic functional groups[2,3,4]. Kinetics of oxidation of benzyl alcohol by various oxidising reagents have been well documented[9,10,11]. The literature survey reveals that the kinetics and mechanism of oxidation of benzyl alcohol by BIFC has not been reported. In the present investigation, we have carried out the oxidation of benzyl alcohol by BIFC in aqueous acetic acid medium and the corresponding mechanistic aspects are discussed in this research paper. Merck) and oxalic acid (Qualigens) were used as supplied without further purification and the other chemicals used in this experiment are all of AnalaR grade samples
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