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2-Iodoxybenzoic acid synthesis by oxidation of 2-Iodobenzoic acid at a Boron-doped diamond anode
File | Description | Size | Format | |
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IBX-fin.docx | Accepted version | 1.8 MB | Microsoft Word | View/Open |
Title: | 2-Iodoxybenzoic acid synthesis by oxidation of 2-Iodobenzoic acid at a Boron-doped diamond anode |
Authors: | Bystron, T Horbenko, A Syslova, K Hii, KM Hellgardt, K Kelsall, GH |
Item Type: | Journal Article |
Abstract: | For the first time, the electrochemical synthesis of 2-iodoxybenzoic acid (IBX), a benign, well-established, popular and highly selective oxidising agent, is described. The objective of the work was to investigate the possibility of generating IBX electrochemically in aqueous solutions by using boron-doped diamond anodes. In 0.2 M H2SO4 aqueous solution, 2-iodobenzoic acid (IBA) was found to be oxidised at potentials >1.6 V vs. SCE, initially to 2-iodosobenzoic acid (IsBA), which was oxidised to IBX at potentials >1.8 V vs. SCE. Reductions of IBX to IsBA and IsBA to IBA occurred at similar potentials of ca. −0.7 V vs. SCE. The voltammetry results were confirmed by performing a series of batch electrolyses at different electrode potentials. Thus, depending on the electrode potential chosen, IBA can be oxidised anodically either to IsBA or IBX with 100 % overall selectivity. The only side-reaction was O2 generation, but charge yields did not decrease below 55 % even at conversions >95 %. |
Issue Date: | 3-Apr-2018 |
Date of Acceptance: | 22-Jan-2018 |
URI: | http://hdl.handle.net/10044/1/57231 |
DOI: | 10.1002/celc.201800027 |
ISSN: | 2196-0216 |
Publisher: | Wiley |
Start Page: | 1002 |
End Page: | 1005 |
Journal / Book Title: | ChemElectroChem |
Volume: | 5 |
Issue: | 7 |
Sponsor/Funder: | Engineering & Physical Science Research Council (EPSRC) |
Funder's Grant Number: | EP/G027544/1 |
Keywords: | Science & Technology Physical Sciences Electrochemistry boron-doped diamond 2-iodoxybenzoic acid 2-iosodobenzoic acid anodic oxidation electrosynthesis ELECTROCHEMICAL OXIDATION IODINE COMPOUNDS ELECTRODES IODOBENZENE DERIVATIVES IBX |
Publication Status: | Published |
Online Publication Date: | 2018-01-22 |
Appears in Collections: | Chemistry Catalysis and Advanced Materials Chemical Engineering Faculty of Natural Sciences Faculty of Engineering |