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Updated: Jul 4, 2025

Retropinacol/Cross-pinacol Coupling Reactions - A Catalytic Access to 1,2-Unsymmetrical Diols
Published on: April 4, 2014
[1,1'-Bi-cyclo-hexa-ne]-1,1'-diol
Zukisani Mtendeni1, Eric Cyriel Hosten1, Richard Betz1
1Nelson Mandela University, Summerstrand Campus, Department of Chemistry, University Way, Summerstrand, PO Box 77000, Port Elizabeth, 6031, South Africa.
This study details a symmetric diol synthesized from cyclohexanone via pinacol coupling. The crystal structure reveals chair conformations and infinite chains formed by hydrogen bonding.
Area of Science:
- Organic Chemistry
- Crystallography
- Supramolecular Chemistry
Background:
- Pinacol coupling is a key reaction for forming carbon-carbon bonds.
- Cyclohexanone derivatives are important building blocks in organic synthesis.
- Understanding crystal packing and hydrogen bonding is crucial for materials science.
Purpose of the Study:
- To synthesize and characterize a novel symmetric diol.
- To elucidate the crystal structure and intermolecular interactions of the compound.
- To investigate the role of hydrogen bonding in the self-assembly of the diol.
Main Methods:
- Pinacol coupling reaction of cyclohexanone.
- Single-crystal X-ray diffraction analysis.
- Analysis of hydrogen bonding networks and conformational preferences.
Main Results:
- Successful synthesis of the symmetric diol C12H22O2.
- Determination of the crystal structure, revealing three molecules in the asymmetric unit.
- Identification of chair conformations for the cyclohexane rings.
- Observation of infinite chains formed by cooperative hydrogen bonding along the crystallographic a-axis.
Conclusions:
- The synthesized diol exhibits specific conformational preferences.
- Cooperative hydrogen bonding dictates the formation of one-dimensional supramolecular chains.
- The study provides insights into the structure-property relationships of cyclohexanone-derived diols.
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