A mechanistic and cautionary case study on the use of alternating potential in electrochemical reactions

Wills, Alfie G. and Poole, Darren L. and Alder, Catherine M. and Reid, Marc (2020) A mechanistic and cautionary case study on the use of alternating potential in electrochemical reactions. ChemElectroChem, 7 (13). pp. 2771-2776. ISSN 2196-0216

[img]
Preview
Text (Wills-etal-CEC-2020-A-mechanistic-and-cautionary-case-study-on-the-use-of-alternating-potential)
Wills_etal_CEC_2020_A_mechanistic_and_cautionary_case_study_on_the_use_of_alternating_potential.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo

Download (4MB)| Preview

    Abstract

    A mechanistic study on use of alternating potential (i. e. electrode polarity switching) in synthetic organic electrochemical method development using the IKA ElectraSyn 2.0 is described. Unexpected product selectivity challenges revealed that alternating potential facilitated direct, rather than mediated, electrochemical benzylic C−H oxidation of toluene derivatives. Whilst constant potential irrespective of the direction of electrode polarity was expected, our in-depth analysis revealed changes in the magnitude of applied potential with periodic switching of electrode polarity. These findings highlight an equipment engineering concern that is likely to influence and inform optimization strategies for a wide range of synthetic organic electrochemical methods under development.