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Updated: Aug 8, 2026

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
A Stereospecific, Intermolecular Biaryl-Coupling Approach to Korupensamine A En Route to the Michellamines
This study demonstrates complete control over axial chirality in Suzuki biaryl cross-coupling reactions using a strategically placed internal ligand. This method yields a single biaryl atropisomer, crucial for synthesizing complex molecules like korupensamine A.
Area of Science:
- Organic Chemistry
- Asymmetric Synthesis
- Catalysis
Background:
- Axial chirality is a key structural feature in many natural products and pharmaceuticals.
- Controlling atropisomerism in biaryl compounds remains a significant challenge in synthetic chemistry.
Purpose of the Study:
- To investigate the control of axial chirality in intermolecular Suzuki biaryl cross-coupling reactions.
- To develop a method for selectively forming single biaryl atropisomers.
Main Methods:
- Utilized an intermolecular Suzuki biaryl cross-coupling reaction.
- Employed a strategically positioned internal ligand (L) to direct the reaction pathway.
- Analyzed the stereochemical outcome of the reductive elimination step.
Main Results:
- Achieved complete control over the directionality of reductive elimination.
- Successfully synthesized a single biaryl atropisomer.
- The obtained atropisomer corresponds to the skeleton of korupensamine A.
Conclusions:
- The developed method offers a highly effective strategy for controlling axial chirality in Suzuki couplings.
- This approach provides access to specific atropisomers, important for complex molecule synthesis.
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