Bifurcating reactions: distribution of products from energy distribution in a shared reactive mode

Abstract

Bifurcating reactions yield two different products emerging from one single transition state and are therefore archetypal examples of reactions that cannot be described within the framework of the traditional Eyring's transition state theory (TST). With the growing number and importance of these reactions in organic and biosynthetic chemistry, there is also an increasing demand for a theoretical tool that would allow for the accurate quantification of reaction outcome at low cost. Here, we introduce such an approach that fulfils these criteria, by evaluating bifurcation selectivity through the energy distribution within the reactive mode of the key transition state. The presented method yields an excellent agreement with experimentally reported product ratios and predicts the correct selectivity for 89% of nearly 50 various cases, covering pericyclic reactions, rearrangements, fragmentations and metal-catalyzed processes as well as a series of trifurcating reactions. With 71% of product ratios determined within the error of less than 20%, we also found that the methodology outperforms three other tested protocols introduced recently in the literature. Given its predictive power, the procedure makes reaction design feasible even in the presence of complex non-TST chemical steps.

Graphical abstract: Bifurcating reactions: distribution of products from energy distribution in a shared reactive mode

Supplementary files

Article information

Article type
Edge Article
Submitted
25 May 2021
Accepted
21 Aug 2021
First published
23 Aug 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2021, Advance Article

Bifurcating reactions: distribution of products from energy distribution in a shared reactive mode

P. Bharadwaz, M. Maldonado-Domínguez and M. Srnec, Chem. Sci., 2021, Advance Article , DOI: 10.1039/D1SC02826J

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