Phototriggered Self-Catalyzed Multicomponent Fluoroalkylation of N-Heteroarenes with Alkenes and RfSO2Na
Ying-Li Cai1, Zi-Tong Zhang1, Rou Ding1
1School of Chemistry and Chemical Engineering, University of South China, Hengyang421001, China.
The Journal of Organic Chemistry
|August 14, 2026
Summary
This study introduces a sustainable method for creating fluoroalkylated N-heteroarenes using a phototriggered reaction. The process is efficient, scalable, and avoids harsh chemicals, offering a greener approach to synthesizing these important compounds.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
- Photochemistry
Background:
- N-heteroarenes are crucial structural motifs in pharmaceuticals and materials.
- Efficient and sustainable methods for fluoroalkylation are highly sought after.
- Existing methods often require harsh conditions or expensive catalysts.
Purpose of the Study:
- To develop a sustainable protocol for synthesizing diverse fluoroalkylated N-heteroarenes.
- To utilize a phototriggered, self-catalyzed multicomponent reaction.
- To demonstrate the efficiency and scalability of the developed method.
Main Methods:
- A phototriggered, self-catalyzed multicomponent reaction involving N-heteroarenes, alkenes, and sodium triflinate (RfSO2Na).
- The reaction proceeds without external photocatalysts or strong oxidants.
- Continuous-flow technology was employed to enhance efficiency and scalability.
Main Results:
- A diverse range of fluoroalkylated N-heteroarenes were successfully synthesized.
- The protocol exhibits broad substrate scope and good functional group tolerance.
- Continuous-flow processing significantly improved reaction efficiency and demonstrated scalability.
Conclusions:
- The developed method offers a sustainable, efficient, and scalable approach for fluoroalkylation of N-heteroarenes.
- The reaction mechanism involves energy transfer, single-electron transfer, a hydrogen shift, and deprotonation.
- This phototriggered, self-catalyzed protocol represents a significant advancement in synthetic organic chemistry.
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