TY - JOUR

T1 - Predicting the catalytic activity of azolium-based halogen bond donors

T2 - an experimentally-verified theoretical study

AU - Sysoeva, Alexandra A

AU - Novikov, Alexander S

AU - Il'in, Mikhail V

AU - Suslonov, Vitalii V

AU - Bolotin, Dmitrii S

N1 - Publisher Copyright: © The Royal Society of Chemistry 2021.

PY - 2021/9/21

Y1 - 2021/9/21

N2 - This report demonstrates the successful application of electrostatic surface potential distribution analysis for evaluating the relative catalytic activity of a series of azolium-based halogen bond donors. A strong correlation (R2> 0.97) was observed between the positive electrostatic potential of the σ-hole on the halogen atom and the Gibbs free energy of activation of the model reactions (i.e., halogen abstraction and carbonyl activation). The predictive ability of the applied approach was confirmed experimentally. It was also determined that the catalytic activity of azolium-based halogen bond donors was generally governed by the structure of the azolium cycle, whereas the substituents on the heterocycle had a limited impact on the activity. Ultimately, this study highlighted four of the most promising azolium halogen bond donors, which are expected to exhibit high catalytic activity.

AB - This report demonstrates the successful application of electrostatic surface potential distribution analysis for evaluating the relative catalytic activity of a series of azolium-based halogen bond donors. A strong correlation (R2> 0.97) was observed between the positive electrostatic potential of the σ-hole on the halogen atom and the Gibbs free energy of activation of the model reactions (i.e., halogen abstraction and carbonyl activation). The predictive ability of the applied approach was confirmed experimentally. It was also determined that the catalytic activity of azolium-based halogen bond donors was generally governed by the structure of the azolium cycle, whereas the substituents on the heterocycle had a limited impact on the activity. Ultimately, this study highlighted four of the most promising azolium halogen bond donors, which are expected to exhibit high catalytic activity.

KW - HETEROCYCLIC CARBENE COMPLEXES

KW - ASYMMETRIC ORGANOCATALYSIS

KW - BRONSTED ACID

KW - SALTS

KW - SUBSTITUENT

KW - ACTIVATION

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UR - http://www.scopus.com/inward/record.url?scp=85115057602&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/bca34e7f-2d84-3e92-ab11-df644069c309/

U2 - 10.1039/d1ob01158h

DO - 10.1039/d1ob01158h

M3 - Article

C2 - 34323914

VL - 19

SP - 7611

EP - 7620

JO - Organic and Biomolecular Chemistry

JF - Organic and Biomolecular Chemistry

SN - 1477-0520

IS - 35

ER -