Cornforth's and Corey-Suggs Cr(VI) compounds as efficient reagents for selective oxidation of certain polyols in aqueous KHSO4 medium –A kinetic and mechanistic approach

Mardhanpally, Anil Kumar; Kamatala, Chinna Rajanna; Pulusu, Vijayshekar; Kodali, Satish Babu; Jakku, Narender Reddy; Yerraguntla, Rajeshwar Rao

doi:10.1016/j.cdc.2022.100847

Cited by 2 publications

(1 citation statement)

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“…The observed negative value of entropy of activation (ΔS ‡ ) indicates that the intermediate complex is more polar compared to the initial reactants. The overall decrease in entropy during complex formation is typically due to the loss of translational energy required to bring multiple reactants together at the transition state (23,30,31).…”

Section: Rtmentioning

confidence: 99%

Insight into D-galactose Oxidation: Kinetic and Mechanistic Analysis with Imidazolium Fluorochromate

Tomar,

Arora,

Singh

2024

Journal of the Turkish Chemical Society Section A: Chemistry

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In a 50% (v/v) aqueous acetic acid medium, a study on the oxidation kinetics of D-galactose by imidazolium fluorochromate (IFC) was conducted. The study revealed unit-order dependence on [D-galactose], [IFC], and [perchloric Acid]. The reaction was catalyzed by perchloric acid, and followed a 1:1 stoichiometric ratio. Adding sodium hyperchlorate (VII) salt did not affect the reaction. Polymerization of acrylonitrile was not observed in the oxidation process. The oxidation rates were retarded on adding Mn2+ ions in the mixture, and rates increased as the reaction medium’s dielectric constant (D) decreased. The observed results follow the Amis and Kirkwood plots {log k1 vs. (1/D) and ((D-1/2D+1))}. Several thermodynamic variables were determined by analyzing the kinetic data across a temperature range. Arabinose and formic acid were formed as the products of the reaction. A mechanistic path involving the formation of an ester followed by hydride ion transfer was proposed.

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Section: Rtmentioning

confidence: 99%