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Automated Robotic Liquid Handling Assembly of Modular DNA Devices
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Stereodivergent synthesis with a programmable molecular machine.

Salma Kassem1, Alan T L Lee1, David A Leigh1

  • 1School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.

Nature
|September 22, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a programmable molecular robot capable of stereoselective synthesis. This artificial molecular machine precisely controls substrate positioning for diverse chemical outcomes in a single reaction vessel.

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Area of Science:

  • Chemical Engineering
  • Organic Chemistry
  • Nanotechnology

Background:

  • Biological molecular machines routinely position substrates for chemical reactions.
  • Artificial molecular machines have been developed for tasks like oligomer synthesis and chirality switching.
  • Previous artificial systems include photo-responsive molecules and substrate transport mechanisms.

Purpose of the Study:

  • To detail an artificial molecular machine that moves a substrate between activating sites.
  • To demonstrate programmable stereoselective synthesis of diastereoisomers.
  • To achieve sequential, one-pot tandem reactions with diverse product outcomes.

Main Methods:

  • Development of a molecular robot for substrate manipulation.
  • Sequential one-pot tandem reaction process involving thiol, alkene, and α,β-unsaturated aldehyde.
  • Programming the machine to control stereoselective product formation.

Main Results:

  • The molecular robot successfully produced an excess of any one of four possible diastereoisomers.
  • Stereodivergent synthesis achieved diastereoisomers not accessible via conventional organocatalysis.
  • Demonstrated precise control over product outcomes through programmed substrate movement.

Conclusions:

  • Artificial molecular machines can be programmed for complex chemical synthesis.
  • This programmable machine offers a novel approach to stereoselective and stereodivergent synthesis.
  • Future molecular robots hold promise for advanced chemical synthesis and molecular manufacturing.