Electrochemical synthesis of biaryls by reductive extrusion from N,N’-diarylureas

Abstract The synthesis of biaryl compounds by the transition-metal free coupling of arenes is an important contemporary challenge, aiming to avoid the toxicity and cost profiles associated with the metal catalysts commonly used in the synthesis of these pharmaceutically relevant motifs. In this pape...

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Main Authors: Ellie Stammers, Chris D. Parsons, Jonathan Clayden, Alastair J. J. Lennox
Format: Article
Language:English
Published: Nature Portfolio 2023-07-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-023-40237-6
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author Ellie Stammers
Chris D. Parsons
Jonathan Clayden
Alastair J. J. Lennox
author_facet Ellie Stammers
Chris D. Parsons
Jonathan Clayden
Alastair J. J. Lennox
author_sort Ellie Stammers
collection DOAJ
description Abstract The synthesis of biaryl compounds by the transition-metal free coupling of arenes is an important contemporary challenge, aiming to avoid the toxicity and cost profiles associated with the metal catalysts commonly used in the synthesis of these pharmaceutically relevant motifs. In this paper, we describe an electrochemical approach to the synthesis of biaryls in which aniline derivatives are coupled through the formation and reduction of a temporary urea linkage. The conformational alignment of the arenes in the N,N’-diaryl urea intermediates promotes C-C bond formation following single-electron reduction. Our optimized conditions are suitable for the synthesis of a variety of biaryls, including sterically hindered examples carrying ortho-substituents, representing complementary reactivity to most metal catalysed methods.
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spelling doaj.art-9ccdf55698314fa8ba454d9fe1651fe12023-07-30T11:18:56ZengNature PortfolioNature Communications2041-17232023-07-011411610.1038/s41467-023-40237-6Electrochemical synthesis of biaryls by reductive extrusion from N,N’-diarylureasEllie Stammers0Chris D. Parsons1Jonathan Clayden2Alastair J. J. Lennox3School of Chemistry, University of Bristol, Cantock’s CloseEarly Chemical Development, Pharmaceutical Sciences, R&D, AstraZenecaSchool of Chemistry, University of Bristol, Cantock’s CloseSchool of Chemistry, University of Bristol, Cantock’s CloseAbstract The synthesis of biaryl compounds by the transition-metal free coupling of arenes is an important contemporary challenge, aiming to avoid the toxicity and cost profiles associated with the metal catalysts commonly used in the synthesis of these pharmaceutically relevant motifs. In this paper, we describe an electrochemical approach to the synthesis of biaryls in which aniline derivatives are coupled through the formation and reduction of a temporary urea linkage. The conformational alignment of the arenes in the N,N’-diaryl urea intermediates promotes C-C bond formation following single-electron reduction. Our optimized conditions are suitable for the synthesis of a variety of biaryls, including sterically hindered examples carrying ortho-substituents, representing complementary reactivity to most metal catalysed methods.https://doi.org/10.1038/s41467-023-40237-6
spellingShingle Ellie Stammers
Chris D. Parsons
Jonathan Clayden
Alastair J. J. Lennox
Electrochemical synthesis of biaryls by reductive extrusion from N,N’-diarylureas
Nature Communications
title Electrochemical synthesis of biaryls by reductive extrusion from N,N’-diarylureas
title_full Electrochemical synthesis of biaryls by reductive extrusion from N,N’-diarylureas
title_fullStr Electrochemical synthesis of biaryls by reductive extrusion from N,N’-diarylureas
title_full_unstemmed Electrochemical synthesis of biaryls by reductive extrusion from N,N’-diarylureas
title_short Electrochemical synthesis of biaryls by reductive extrusion from N,N’-diarylureas
title_sort electrochemical synthesis of biaryls by reductive extrusion from n n diarylureas
url https://doi.org/10.1038/s41467-023-40237-6
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AT alastairjjlennox electrochemicalsynthesisofbiarylsbyreductiveextrusionfromnndiarylureas