Issue 7, 2023
From the journal:

Chemical Science

Electrochemical oxidation of styrene to benzaldehyde by discrimination of spin-paired π electrons†

Xiaoxue Luo,a   Xiaoxia Tang,a   Jingtian Ni,a   Baijing Wu,a   Cunpu Li, ORCID logo *a   Minhua Shao ORCID logo b  and  Zidong Wei ORCID logo *a  

* Corresponding authors

a The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
E-mail: lcp@cqu.edu.cn, zdwei@cqu.edu.cn

b Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong

Abstract

The oxidation of styrene to benzaldehyde has been a considerable challenge in the electrochemical synthesis of organic compounds because styrene is more easily oxidized to benzoic acid. In this work, MnO2 with an asymmetric electronic configuration is designed to discriminate the spin-paired π electrons of styrene. One of these discriminated π electrons combined with reactive oxygen species (ROS), ˙OH, ˙OOH, etc., produced simultaneously on a MnO2/(Ru0.3Ti0.7)O2/Ti bifunctional anode, to form benzaldehyde via Grob fragmentation, rather than benzoic acid. However, only benzoic acid is obtained from the oxidation of styrene on the anodes MOs/(Ru0.3Ti0.7)O2/Ti, where MOs are other metal oxides with symmetric electronic configurations.

Graphical abstract: Electrochemical oxidation of styrene to benzaldehyde by discrimination of spin-paired π electrons

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Article information

DOI
https://doi.org/10.1039/D2SC05913D
Article type
Edge Article
Submitted
26 Oct 2022
Accepted
12 Jan 2023
First published
27 Jan 2023
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2023,14, 1679-1686

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Electrochemical oxidation of styrene to benzaldehyde by discrimination of spin-paired π electrons

X. Luo, X. Tang, J. Ni, B. Wu, C. Li, M. Shao and Z. Wei, Chem. Sci., 2023, 14, 1679 DOI: 10.1039/D2SC05913D

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