Journal of Molecular Evolution

, Volume 81, Issue 1–2, pp 1–9 | Cite as

Imidazolium Catalysts Formed by an Iterative Synthetic Process as a Model System for Chemical Evolution

  • Ryan M. Clairmont
  • Andreas S. Bommarius
  • Arthur L. Weber
Original Article

Abstract

Processes exhibiting diversity and selection would have been necessary to promote chemical evolution on early Earth. In this work, a model process was developed using non-kinetic selection to synthesize and isolate small molecule imidazolium catalysts. These catalysts were purified by affinity chromatography and recycled back into the process, forming a product feedback loop. In dimethylformamide, the catalysts activated the coupling of formaldehyde to short chain sugars. This sugar mixture was reacted with aniline, acetic acid, and paraformaldehyde to generate new catalysts. Thus chemical diversity was produced through non-selective, multi-component synthesis. Applying sequential dilution-reaction-purification cycles it was demonstrated that this process can function independently of starting catalyst. Over three process cycles, the initiator catalyst is effectively diluted out as a new catalyst population emerges to take its place. This system offers an alternative viewpoint for chemical evolution via the generation of small molecule organocatalysts.

Keywords

Imidazolium Catalysis Process chemistry Evolution Sugars 

Supplementary material

239_2015_9687_MOESM1_ESM.pdf (1.9 mb)
Supplementary material 1 (PDF 1981 kb)

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Ryan M. Clairmont
    • 1
  • Andreas S. Bommarius
    • 1
    • 2
  • Arthur L. Weber
    • 3
  1. 1.School of Chemical and Biomolecular EngineeringGeorgia Institute of TechnologyAtlantaUSA
  2. 2.School of Chemistry and BiochemistryGeorgia Institute of TechnologyAtlantaUSA
  3. 3.SETI Institute/NASA Ames Research CenterMoffett FieldUSA

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