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Chemoselective (Hetero)Arene Electroreduction Enabled by Rapid Alternating Polarity
Kyohei Hayashi1, Jeremy Griffin2, Kaid C Harper2
1Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States.
Journal of the American Chemical Society
|March 29, 2022
Summary
A new electrochemical method using rapid alternating polarity (rAP) offers a simpler, more selective approach to Birch-type reductions. This technique avoids harsh conditions and metal additives, enabling efficient reductions in protic solvents.
Area of Science:
- Organic Chemistry
- Electrochemistry
- Synthetic Methodology
Background:
- Conventional Birch-type reductions often lack chemoselectivity.
- Reliance on alkali metals and harsh conditions limits applicability.
- Electrochemical methods can offer alternatives but face challenges.
Purpose of the Study:
- To develop a more selective and simpler method for Birch-type reductions.
- To explore the use of waveform control in electroorganic synthesis.
- To overcome limitations of traditional reduction techniques.
Main Methods:
- Utilized rapid alternating polarity (rAP) waveform in electrochemical reductions.
- Performed reductions in a protic solvent.
- Investigated scalability of the rAP method.
Main Results:
- Achieved high chemoselectivity in Birch-type reductions.
- Demonstrated successful reductions without metal additives.
- Confirmed the method's viability under non-stringent anhydrous conditions.
- Showcased ease of scale-up for the rAP technique.
Conclusions:
- Rapid alternating polarity (rAP) provides a superior alternative to conventional Birch-type reductions.
- The developed electrochemical method is practical, scalable, and environmentally friendlier.
- This waveform-controlled approach expands the toolkit for selective organic synthesis.
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