Redox Properties of Catalytically Generated Iminium Ions From α,β‐Unsaturated Aldehydes and Chiral Secondary Amines

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Main Authors: Martí Gisbert, Paula Rodríguez, Xavier Companyó
Format: Artículo Open Access
Published: Wiley 2026
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author Martí Gisbert
Paula Rodríguez
Xavier Companyó
author_facet Martí Gisbert
Paula Rodríguez
Xavier Companyó
Martí Gisbert
Paula Rodríguez
Xavier Companyó
collection Wiley Open Access
contents Redox Properties of Catalytically Generated Iminium Ions From α,β‐Unsaturated Aldehydes and Chiral Secondary Amines Martí Gisbert Paula Rodríguez Xavier Companyó European Journal of Organic Chemistry Chiral iminium ions are key catalytic intermediates in aminocatalysis, enabling a wide range of enantioselective transformations. Yet, a systematic study of how their electrochemical properties vary as a function of the different reaction components has remained elusive, largely due to their transient nature and inherent instability. Herein we show a general protocol for the catalytic generation and in situ cyclic voltammetric characterisation of over 50 chiral iminium ions. This analysis reveals how the catalyst electronics, aldehyde nature and substitution, and the solvent environment governs their reduction potential. This electrochemical mapping provides predictive insights into iminium ion reactivity via single‐electron transfer, laying the groundwork for the rational design of novel radical‐based asymmetric transformations. 10.1002/ejoc.70549 http://creativecommons.org/licenses/by/4.0/
doi_str_mv 10.1002/ejoc.70549
format Artículo Open Access
id wiley_oa_10_1002_ejoc_70549
institution Wiley Open Access
license_str_mv http://creativecommons.org/licenses/by/4.0/
publishDate 2026
publisher Wiley
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spellingShingle Redox Properties of Catalytically Generated Iminium Ions From α,β‐Unsaturated Aldehydes and Chiral Secondary Amines
Martí Gisbert
Paula Rodríguez
Xavier Companyó
European Journal of Organic Chemistry
Redox Properties of Catalytically Generated Iminium Ions From α,β‐Unsaturated Aldehydes and Chiral Secondary Amines Martí Gisbert Paula Rodríguez Xavier Companyó European Journal of Organic Chemistry Chiral iminium ions are key catalytic intermediates in aminocatalysis, enabling a wide range of enantioselective transformations. Yet, a systematic study of how their electrochemical properties vary as a function of the different reaction components has remained elusive, largely due to their transient nature and inherent instability. Herein we show a general protocol for the catalytic generation and in situ cyclic voltammetric characterisation of over 50 chiral iminium ions. This analysis reveals how the catalyst electronics, aldehyde nature and substitution, and the solvent environment governs their reduction potential. This electrochemical mapping provides predictive insights into iminium ion reactivity via single‐electron transfer, laying the groundwork for the rational design of novel radical‐based asymmetric transformations. 10.1002/ejoc.70549 http://creativecommons.org/licenses/by/4.0/
title Redox Properties of Catalytically Generated Iminium Ions From α,β‐Unsaturated Aldehydes and Chiral Secondary Amines
topic European Journal of Organic Chemistry
url https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/ejoc.70549