A simple salt mediated electrooxidative method for the synthesis of benzaldehydes from benzyl alcohols

Abstract

A mild and efficient approach for the electrochemical conversion of benzyl alcohols to benzaldehydes is reported in homogeneous medium using Carbon/Stainless Steel electrodes and NaCl as mediator with H₂SO₄ as supporting electrolyte. To achieve excellent product conversion, optimization of the reaction condition with various parameters was carried out in a beaker type cell. In 2 F of current density and ambient temperature, benzyl alcohols electrochemically oxidized to benzaldehydes in 90% yield. The present work demonstrates a green and sustainable route for benzaldehydes preparation and the superiority of electrochemical method for organic synthesis.

Graphical Abstract

Keywords:

• Beaker type cell
• benzaldehyde
• benzylic alcohols
• homogeneous medium
• sodium chloride

Acknowledgements

The authors (R. Jagatheesan and S. Sambathkumar) thanks Dr V. Kumaravel, Director-Academic, Vivekanandha College of Arts and Sciences for Women (Autonomous), Tiruchengode-637 205, Namakkal, Tamil Nadu, for being generous and understanding in granting permission to carry out research work.