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Updated: Jul 12, 2026
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[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
When Dowd-Beckwith reaction meets photocatalysis.
Zhichao Zhang1, Lipeng Qiao1,2, Kai Sun1
1College of Chemistry, Zhengzhou University, Zhengzhou 450001, China. bingyu@zzu.edu.cn.
Organic & Biomolecular Chemistry
|July 10, 2026
Summary
Photocatalysis has revolutionized the Dowd-Beckwith reaction, enabling efficient synthesis of medium-sized carbocycles. This review explores recent advances in photocatalytic ring-expansion methods, offering new insights for carbocycle synthesis.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
- Photocatalysis
Background:
- The Dowd-Beckwith reaction is a key method for creating medium-sized carbocyclic frameworks.
- Classical Dowd-Beckwith protocols have inherent limitations.
- Photocatalysis offers a novel approach to overcome these limitations.
Purpose of the Study:
- To review recent advancements in photocatalytic Dowd-Beckwith ring-expansion reactions.
- To categorize methodologies based on radical initiation.
- To discuss mechanistic features of these reactions.
Main Methods:
- Literature review of photocatalytic Dowd-Beckwith reactions.
- Categorization of methods by radical initiation mode.
- Analysis of reaction mechanisms.
Main Results:
- Photocatalysis provides a distinct platform for Dowd-Beckwith reactions.
- Recent advances have expanded the scope and efficiency of these reactions.
- Different radical initiation modes offer diverse synthetic pathways.
Conclusions:
- Photocatalytic Dowd-Beckwith reactions represent a significant advancement in carbocycle synthesis.
- This approach circumvents limitations of traditional methods.
- The review provides insights for the practical synthesis of medium-sized carbocycles.
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