Strategies To Assemble Catenanes with Multiple Interlocked Macrocycles

Area of Science:

• Supramolecular Chemistry
• Materials Science

Background:

• Catenanes are mechanically interlocked molecules with unique topological properties.
• Their mechanical properties are promising for novel functional molecular materials.
• Synthesizing catenanes with multiple interlocked macrocycles ([n]catenanes) is particularly difficult.

Purpose of the Study:

• To discuss the challenges and strategies for synthesizing [n]catenanes.
• To highlight the importance of efficient and controllable synthetic routes.
• To explore the potential of [n]catenanes in materials science.

Main Methods:

• This viewpoint discusses existing challenges and considerations in [n]catenane synthesis.
• It reviews templated methods and their limitations.
• It proposes strategies for future synthetic efforts.

Main Results:

• Few examples of [n]catenanes have been reported due to synthetic difficulties.
• Advancements in templated methods have not fully addressed [n]catenane synthesis.
• Reliable and efficient strategies are needed to access [n]catenanes.

Conclusions:

• The synthesis of [n]catenanes presents significant challenges.
• Overcoming these challenges is crucial for exploiting catenane mechanical properties.
• Further research into controllable and efficient synthetic strategies is necessary.