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Updated: Dec 17, 2025

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Synthesis and Structure of Functionalized Zigzag Hydrocarbon Belts
Yang Zhang1, Shuo Tong1, Mei-Xiang Wang1
1MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
Researchers synthesized novel zigzag hydrocarbon belts with unique edge functionalization. These molecular belts can be modified to adopt various shapes, showcasing versatile structural possibilities.
Area of Science:
- Organic Chemistry
- Supramolecular Chemistry
- Materials Science
Background:
- Molecular belts are cyclic organic molecules with potential applications in host-guest chemistry and materials science.
- Developing efficient synthetic strategies for complex molecular architectures remains a significant challenge in organic chemistry.
Purpose of the Study:
- To develop a novel synthetic route for edge-functionalized zigzag hydrocarbon belts.
- To explore the structural diversity and functionalization of these molecular belts.
Main Methods:
- A "fjord-stitching" strategy involving repetitive intramolecular acylation of resorcin[4]arene derivatives.
- Chemical modifications including ketone reduction (using NaBH4), nucleophilic addition (using n-butyllithium), and selective oxidation (using m-CPBA and (PhSeO)2O).
Main Results:
- Successful synthesis of a biscarbonyl-functionalized octahydrobelt[8]arene precursor.
- Generation of secondary and tertiary alcohol-containing molecular belts.
- Formation of lactone- and 1,4-quinone-embedded molecular belts.
- Demonstration that edge functional groups dictate the final molecular shape (square prism, truncated cone, elliptical cylinder).
Conclusions:
- The "fjord-stitching" strategy provides a versatile platform for constructing functionalized molecular belts.
- The synthesized belts exhibit tunable shapes and functionalities, opening avenues for advanced molecular materials.
- This work expands the scope of molecular belt synthesis and functionalization.
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