Hypervalent Iodine Based Reversible Covalent Bond in Rotaxane Synthesis.

Area of Science:

• Supramolecular Chemistry
• Organic Synthesis

Background:

• Reversible covalent bonds are crucial for synthesizing mechanically interlocked molecules.
• The range of applicable reversible covalent bonds in such syntheses is limited.

Purpose of the Study:

• To develop a novel, fast, and simple method for preparing interlocked molecules.
• To utilize the dynamic nature of bis(acyloxy)iodate(I) anions with bambusuril anion receptors.

Main Methods:

• Proof-of-principle rotaxane synthesis using bis(acyloxy)iodate(I) anions and bambusuril receptors.
• Employing both classical and in situ synthetic approaches.
• Characterization using X-ray crystallography and Nuclear Magnetic Resonance (NMR) spectroscopy.

Main Results:

• Achieved near-quantitative yields in rotaxane synthesis.
• Confirmed rotaxane formation in both solid-state and solution.
• Demonstrated the efficacy of the novel dynamic bond approach.

Conclusions:

• The developed method offers a facile route to mechanically interlocked molecules.
• This approach expands the toolkit for dynamic covalent chemistry.
• Potential applications include supramolecular polymers and molecular machines, inspiring research on reactive dynamic molecules.