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Updated: Jun 20, 2026

Retropinacol/Cross-pinacol Coupling Reactions - A Catalytic Access to 1,2-Unsymmetrical Diols
Published on: April 4, 2014
A new cross-coupling-based synthesis of carpanone
Frédéric Liron1, Francesco Fontana, Jean-Olivier Zirimwabagabo
1Institut Parisien de Chimie Moléculaire UMR CNRS 7201, FR2769 Institut de Chimie Moléculaire, UPMC Univ Paris 06, Place Jussieu, 75005, Boite 183, Paris, France.
Researchers developed a stereoselective synthesis for carpanone using a Suzuki-Miyaura coupling and Pd(II)-catalyzed oxidative coupling. This efficient six-step process yields a single diastereoisomer, proposing a novel reaction mechanism.
Area of Science:
- Organic Synthesis
- Medicinal Chemistry
Background:
- Carpanone is a natural product with potential biological activities.
- Efficient synthetic routes are crucial for further investigation and development.
Purpose of the Study:
- To develop a stereoselective and efficient synthesis of carpanone.
- To elucidate the mechanism of the key oxidative coupling step.
Main Methods:
- Stereoselective synthesis of carpanone from sesamol in six steps.
- Utilized Suzuki-Miyaura cross-coupling for side chain introduction.
- Employed Palladium(II)-catalyzed oxidative coupling for cyclization.
Main Results:
- Achieved 55% overall yield for carpanone synthesis.
- The key oxidative coupling produced a single diastereoisomer.
- Demonstrated independence of stereochemical outcome from precursor geometry.
Conclusions:
- A novel and efficient synthetic route to carpanone has been established.
- The proposed mechanism for the Pd(II)-catalyzed oxidative coupling offers new insights.
- This synthesis provides a foundation for exploring carpanone's therapeutic potential.
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