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Alkynyltriazenes in photochemical metal-free Doyle-Kirmse rearrangements

Doyle-Kirmse rearrangement reactions are widely recognized as versatile and powerful synthetic tools, promoting the simultaneous generation of C─C and C─S bonds. While notable progress has been attained, Doyle-Kirmse rearrangement reactions involving cyanocarbenes have rarely been reported owing to...

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Main Authors: Liu, Ningning (Author) , Dittmer, Linus Bjarne (Author) , Maag, Melina (Author) , Michel, Elena (Author) , Rominger, Frank (Author) , Rudolph, Matthias (Author) , Dreuw, Andreas (Author) , Hashmi, A. Stephen K. (Author)
Format: Article (Journal)
Language:English
Published: 9 February 2026
In: Angewandte Chemie. International edition
Year: 2026, Volume: 65, Issue: 7, Pages: 1-8
ISSN:1521-3773
DOI:10.1002/anie.202521012
Online Access:Resolving-System, kostenfrei, Volltext: https://doi.org/10.1002/anie.202521012
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202521012
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Author Notes:Ningning Liu, Linus Bjarne Dittmer, Melina Maag, Elena Michel, Frank Rominger, Matthias Rudolph, Andreas Dreuw, and A. Stephen K. Hashmi
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Summary:Doyle-Kirmse rearrangement reactions are widely recognized as versatile and powerful synthetic tools, promoting the simultaneous generation of C─C and C─S bonds. While notable progress has been attained, Doyle-Kirmse rearrangement reactions involving cyanocarbenes have rarely been reported owing to the limited strategies available for the preparation of cyanocarbene precursors and its inherently restricted reactivity. Herein, we report photochemical Doyle-Kirmse rearrangement reactions of alkynyl triazenes via intermediate cyanocarbenes under metal- and additive-free conditions, leading to valuable α-mercapto-nitriles in generally moderate-to-good yields. In contrast to existing methods that utilize alternative cyanocarbene precurors, this approach delivers the possibility to access highly substituted stereogenic carbon centers and it offers a safer alternative by avoiding hazardous reagents. The reactions proceed under mild conditions, and demonstrate broad substrate compatibility. In addition, upscaling of the reaction was successfully demonstrated. Besides the use of allylsulfides, propargyl as well as allenylsulfides were also feasible substrates demonstrating the great synthetic potential of the transformation.
Item Description:Online verfügbar: 10. Januar 2026
Gesehen am 09.04.2026
Physical Description:Online Resource
ISSN:1521-3773
DOI:10.1002/anie.202521012

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