An autonomous organic reaction search engine for chemical reactivity

Vincenza Dragone, Victor Sans, Alon B. Henson, Jaroslaw M. Granda and Leroy Cronin ()
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Vincenza Dragone: WestCHEM, School of Chemistry, University of Glasgow
Victor Sans: WestCHEM, School of Chemistry, University of Glasgow
Alon B. Henson: WestCHEM, School of Chemistry, University of Glasgow
Jaroslaw M. Granda: WestCHEM, School of Chemistry, University of Glasgow
Leroy Cronin: WestCHEM, School of Chemistry, University of Glasgow

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract The exploration of chemical space for new reactivity, reactions and molecules is limited by the need for separate work-up-separation steps searching for molecules rather than reactivity. Herein we present a system that can autonomously evaluate chemical reactivity within a network of 64 possible reaction combinations and aims for new reactivity, rather than a predefined set of targets. The robotic system combines chemical handling, in-line spectroscopy and real-time feedback and analysis with an algorithm that is able to distinguish and select the most reactive pathways, generating a reaction selection index (RSI) without need for separate work-up or purification steps. This allows the automatic navigation of a chemical network, leading to previously unreported molecules while needing only to do a fraction of the total possible reactions without any prior knowledge of the chemistry. We show the RSI correlates with reactivity and is able to search chemical space using the most reactive pathways.

Date: 2017
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DOI: 10.1038/ncomms15733

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