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Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs

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Published on: January 17, 2020

Polarizability matters in enantio-selection.

Fumin Chen^1,2, Yu Chen², Xiao-Yong Chang²

¹School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China.

Nature Communications

|April 22, 2024

Summary

Chirality is key in biology. A new electronic effect based on polarizability explains enantioselectivity in asymmetric catalysis, aiding chiral molecule production.

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Area of Science:

Organic Chemistry
Stereochemistry
Catalysis

Background:

Chirality, or handedness, is fundamental to life and a major focus in asymmetric catalysis.
Understanding enantioselection, the basis of asymmetric induction, is crucial for synthesizing chiral compounds.

Purpose of the Study:

To demonstrate a polarizability-derived electronic effect for rationalizing stereochemical outcomes in asymmetric catalysis.
To establish a consistent model for predicting major enantiomers in ruthenium-catalyzed asymmetric transfer hydrogenation of ketones.

Main Methods:

Investigated a polarizability-derived electronic effect in asymmetric catalysis.
Developed a consistent enantiocontrol model for ruthenium-catalyzed asymmetric transfer hydrogenation.
Revealed linear free energy relationships between substrate polarizability and enantioselectivity.

Main Results:

The polarizability effect successfully rationalizes diverse stereochemical observations in asymmetric catalysis.
A ruthenium-catalyzed asymmetric transfer hydrogenation model accurately predicts major enantiomers.
Quantitative relationships were found between substrate polarizability and enantioselectivity across multiple catalytic systems.

Conclusions:

A broadly applicable polarizability-based electronic effect aids in understanding and predicting enantioselectivity.
This effect, combined with steric considerations, can guide the rational design of enantioselective processes.
Facilitates improved production of valuable chiral substances.