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Stimuli responsive asymmetric catalysis by triggered pseudo-enantiomeric proligand release
Sam A Spring1, Sean Goggins2, Christopher G Frost3
1Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK. sam.spring@warwick.ac.uk.
Organic & Biomolecular Chemistry
|March 2, 2022
Summary
Researchers developed a dual pseudo-enantiomer system for molecular machines. This system uses two asymmetric catalytic cycles, triggered by specific stimuli, to produce enantioenriched products with high selectivity.
Area of Science:
- Supramolecular Chemistry
- Asymmetric Catalysis
- Molecular Systems
Background:
- Complex stimuli-responsive systems are crucial for molecular machines and computing.
- Asymmetric catalysis enables the synthesis of enantiomerically pure compounds, vital in pharmaceuticals and materials science.
Purpose of the Study:
- To design and synthesize a dual pseudo-enantiomer system capable of selective asymmetric catalysis.
- To achieve controlled enantioenrichment of products through external stimuli-responsive triggers.
Main Methods:
- Design and synthesis of two pseudo-enantiomeric proligands.
- Selective activation of catalytic cycles using fluoride and alkaline phosphatase.
- Incorporation into single and dual proligand systems for catalytic reactions.
Main Results:
- Demonstrated selective activation of two 'switch-on' asymmetric catalytic cycles.
- Achieved high enantioselectivity (up to 98:2) in the reduction of a prochiral ketone.
- Successfully integrated the system for stimuli-responsive enantioenrichment.
Conclusions:
- The developed dual pseudo-enantiomer system offers a novel approach for stimuli-responsive molecular machines.
- Selective activation by specific triggers allows for precise control over enantioselective synthesis.
- This work advances the field of molecular computing and catalysis.
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