Breakthrough in Nanotechnology: Iron Photocatalysis Enables Decarboxylative Bromination of Heteroaryl Carboxylic Acids

Researchers at the University of Chinese Academy of Sciences have made a groundbreaking discovery in the field of nanotechnology, developing a novel photocatalytic decarboxylative functionalization of carboxylic acids. The study, published in Organic Letters, presents a new protocol for the decarboxylative bromination of heteroaryl carboxylic acids using iron photocatalysis.

Key Takeaways:

• The researchers developed a decarboxylative bromination protocol of (hetero)aryl carboxylic acids via iron photocatalysis, offering a new approach to multisubstituted bromoarenes synthesis.
• The photocatalytic decarboxylative functionalization of carboxylic acids was mostly limited to alkyl carboxylic acids, making the new protocol an improvement.
• The study used NaBrO as both the oxidant and bromine source, simplifying the operation and making readily available raw materials.
• The iron-catalyzed version is still rare, but this work takes a significant step forward by introducing NaBrO as a multifunctional reagent for bromination and oxidation.
• The new protocol enables the decarboxylative bromination of a diverse range of (hetero)aryl carboxylic acids, providing a feasible approach for synthesizing multisubstituted bromoarenes.
• The research has been peer-reviewed and published in Organic Letters, a leading journal in the field of organic chemistry.
• Jian Jin, the lead researcher, is available for further information at the State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences.

Statistics:

• 5 years: the time frame within which several decarboxylative functionalization reactions of aryl carboxylic acids by copper photocatalysis were disclosed.
• 2025: the year in which the study was published in Organic Letters.
• 1155 16TH St, NW, Washington, DC 20036, USA: the address of the American Chemical Society, the publisher of Organic Letters.
• 345 Lingling Road, Shanghai 200032, People's Republic of China: the address of the State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences.

Sources:

• NewsRx. University of Chinese Academy of Sciences Reports Findings in Photocatalytics [Iron Photocatalysis Enabling Decarboxylative Bromination of (Hetero)Aryl Carboxylic Acids]. Nanotechnology Weekly. June 30, 2025; p 3739.
• American Chemical Society. Organic Letters. www.pubs.acs.org/journal/orlef7
• University of Chinese Academy of Sciences. State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry. 345 Lingling Road, Shanghai 200032, People's Republic of China.