Kinetics and Mechanism of Oxidation of Benzyl Alcohol by Benzimidazolium Fluorochromate

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.

Studies on the Kinetics of Benzimidazolium Fluorochromate Oxidation of Pyridine-2-aldehyde in Aqueous Acetic Acid Medium

“…Benzimidazolium fluorochromate was reported to be a mild, stable and selective oxidant. A perusal of the literature showed that there seems to be a very few reports using BIFC [25][26][27][28][29][30] . Literature survey has also unveiled the fact that the study of oxidation of heterocyclic aldehyde like pyridine-2-aldehyde in aqueous acetic acid medium is lacking.…”

Studies on the Kinetics of Oxidation of 4-Oxo-4-phenylbutanoic Acid by Benzimidazolium Fluorochromate in the Presence of Oxalic Acid in Acetic Acid-Water Medium

“…Benzimidazolium fluorochromate is also one such oxidant developed recently [8][9][10][11][12][13] . It is a more efficient and stronger oxidizing agent.…”

Comparative Studies on Tributylammonium Chlorochromate Oxidation of Pentaammine Cobalt(III) Complexes of a-Hydroxy Acids Catalyzed by Benzalkonium Chloride

“…It is proved that Cr(VI) reagents is the best for the oxidation of most organic functional groups [1][2][3]. In recent years, more achievement were made using new Cr(VI) reagents such as tripropylammonium fluorochromate [4], pyridinium fluorochromate [5], tetrabutylammonium chlorochromate [6] and tetraethyl ammonium chlorochromate [7] etc., have been attempted to determine the kinetic and mechanistic route of various organic compounds [8][9][10][11][12][13][14][15][16].…”