Symmetry-driven diastereoselective functionalization of simple trianglamine

Area of Science:

• Organic Chemistry
• Supramolecular Chemistry
• Chemical Crystallography

Background:

• Macrocyclic compounds offer unique structural scaffolds.
• Selective synthesis of diastereomers is crucial in complex molecule construction.
• Understanding stereochemical outcomes in macrocycle derivatization is key.

Purpose of the Study:

• To investigate the stereoselective derivatization of trianglamine macrocycles.
• To elucidate the structural and symmetry properties of the resulting aminal products.
• To explore the utility of combined analytical and computational methods in determining diastereoselectivity.

Main Methods:

• Reaction of trianglamine macrocycle with aliphatic aldehydes.
• Single-crystal X-ray diffraction analysis.
• Nuclear Magnetic Resonance (NMR) spectroscopy.
• Density Functional Theory (DFT) calculations.

Main Results:

• Selective formation of a single diastereomeric aminal product.
• X-ray crystallography confirmed the molecular structure and stereochemistry.
• NMR data corroborated the selective formation and structural assignment.
• DFT calculations supported the experimental findings, highlighting higher symmetry in the observed product.

Conclusions:

• Aliphatic aldehyde derivatization of trianglamine macrocycles proceeds with high diastereoselectivity.
• The preferred product possesses a higher symmetry conformation.
• A combination of X-ray, NMR, and DFT methods effectively characterizes the stereochemical outcome.