The Highly Effective Electrochemical Oxidation of Substituted Benzyl Alcohols in A Biphasic Medium Is Mediated by Bromate on A Platinum Electrode

Savari, Susila G; Selvaraj, S. Joseph

doi:10.22034/abec.2023.706511

The Highly Effective Electrochemical Oxidation of Substituted Benzyl Alcohols in A Biphasic Medium Is Mediated by Bromate on A Platinum Electrode

Document Type : Original Article

Authors

Susila G Savari

S. Joseph Selvaraj

Department of Chemistry, St. Joseph’s College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli-620 002, Tamilnadu, India

10.22034/abec.2023.706511

Abstract

This article describes how benzyl alcohol was electro-oxidatively converted to benzaldehyde at a platinum metal electrode in a biphasic media utilizing bromate as the mediator. Based on current density, electrode material, temperature, solvent, inorganic salt mediator, and reaction system pH, electrolysis conditions were tuned. By adjusting the electrolysis parameters coupled with a straightforward reaction setup, the current experiment was able to produce outstanding yields of benzaldehyde (97%) at the optimal reaction conditions. One mole of benzyl alcohol was converted to benzaldehyde using 5 F of electrical current. The yield (97%) and current efficiency (97%) of two-phase electrolysis are both quite high. Several substituted benzyl alcohols were subjected to the optimum conditions, and encouraging yields were achieved. The oxidation of benzyl alcohol has been theorized to be a feasible mechanism. To the best of our knowledge, our work is the first to describe how substituted benzyl alcohol derivatives are oxidized in a biphasic system. In the current study, a number of primary and secondary alcohols were converted to the matching aldehydes or ketones by using the mediator bromate.

Keywords

Electrooxidation

Sodium bromate

Substituted benzyl alcohols

Platinum electrode

Biphasic medium

Subjects