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Palladium-Catalyzed Aminocarbonylation Using Nitroarenes under NMP-Mediated Photochemical Conditions
Minwoo Park1, Karthik Rajan Rajamanickam1, Sunwoo Lee1
1Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea.
Organic Letters
|June 13, 2025
Summary
This study introduces a novel photochemical method for synthesizing amides under mild conditions using aryl iodides, carbon monoxide, and nitroarenes. The process demonstrates broad functional group tolerance, offering a new route for amide synthesis.
Area of Science:
- Organic Chemistry
- Photochemistry
- Catalysis
Background:
- Amide synthesis is crucial in organic chemistry.
- Traditional methods often require harsh conditions or specialized reagents.
- Developing mild and efficient amide synthesis routes is an ongoing challenge.
Purpose of the Study:
- To develop a novel photochemical method for amide synthesis.
- To achieve mild reaction conditions (25 °C, 1 atm CO).
- To explore the use of nitroarenes as nitrogen sources in amide formation.
Main Methods:
- Photochemical reaction of aryl iodides, carbon monoxide, and nitroarenes.
- Utilizing a PdCl2/Xantphos-FeCl3 catalyst system.
- Employing N-methylpyrrolidone as a solvent and reactant.
Main Results:
- Successful synthesis of amides under mild conditions.
- Demonstrated broad functional group tolerance.
- Elucidated the reaction mechanism involving a base-activated N-methylpyrrolidone-bound adduct and an aniline-like intermediate.
Conclusions:
- The developed photochemical approach offers an efficient and mild route for amide synthesis.
- Nitroarenes can serve as effective nitrogen sources in this transformation.
- The mechanistic insights provide a foundation for further optimization and development of related catalytic systems.
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