Machine Learning Enables a Top-Down Approach to Mechanistic Elucidation

18 June 2024, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

General reaction behavior is rarely reported in asymmetric catalysis, not simply because it is difficult to achieve, but also due to the methods used for its identification and study. Traditional approaches involve compartmentalization, where the impact of individual components is first analyzed, followed by assimilation using simple response and structure matching techniques. However, extending this method to accommodate complex conditions and diverse reactions proves challenging. Here, we present a data-driven method that relies on clusterwise linear regression to derive and predictively apply general mechanistic models of enantioinduction, with minimal human intervention. When applied to the palladium-catalyzed decarboxylative asymmetric allylic alkylation (DAAA) reaction, unexpected interactions governing enantioselectivity are revealed, supported by high-level computations and additional experiments. Our results demonstrate this workflow as a powerful new tool for automating mechanistic elucidation and effectively identifying general reaction performance.

Keywords

Machine Learning
Generality
Mechanism
Chirality

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