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Isomerization of Functionalized Olefins by Using the Dinuclear Catalyst [Pd (μ-Br)(P Bu )] : A Mechanistic Study

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Journal Chemistry
Specialty Chemistry
Date 2021 Aug 13
PMID 34387372
Citations 1
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Abstract

In a combined experimental and computational study, the isomerization activity of the dinuclear palladium(I) complex [Pd (μ-Br)(P Bu )] towards allyl arenes, esters, amides, ethers, and alcohols has been investigated. The calculated energy profiles for catalyst activation for two alternative dinuclear and mononuclear catalytic cycles, and for catalyst deactivation are in good agreement with the experimental results. Comparison of experimentally observed E/Z ratios at incomplete conversion with calculated kinetic selectivities revealed that a substantial amount of product must form via the dinuclear pathway, in which the isomerization is promoted cooperatively by two palladium centers. The dissociation barrier towards mononuclear Pd species is relatively high, and once the catalyst enters the energetically more favorable mononuclear pathway, only a low barrier has to be overcome towards irreversible deactivation.

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References
1.
Chen C, Dugan T, Brennessel W, Weix D, Holland P . Z-selective alkene isomerization by high-spin cobalt(II) complexes. J Am Chem Soc. 2014; 136(3):945-55. DOI: 10.1021/ja408238n. View

2.
Hratchian H, Schlegel H . Using Hessian Updating To Increase the Efficiency of a Hessian Based Predictor-Corrector Reaction Path Following Method. J Chem Theory Comput. 2015; 1(1):61-9. DOI: 10.1021/ct0499783. View

3.
Maity B, Goossen L, Koley D . Computational study of the mechanism and selectivity of ruthenium-catalyzed hydroamidations of terminal alkynes. Chem Sci. 2017; 6(4):2532-2552. PMC: 5539791. DOI: 10.1039/c4sc03906h. View

4.
Tommaso S, Tognetti V, Sicilia E, Adamo C, Russo N . Computational study of alkynes insertion into metal-hydride bonds catalyzed by bimetallic complexes. Inorg Chem. 2010; 49(21):9875-83. DOI: 10.1021/ic100850f. View

5.
Hratchian H, Schlegel H . Accurate reaction paths using a Hessian based predictor-corrector integrator. J Chem Phys. 2004; 120(21):9918-24. DOI: 10.1063/1.1724823. View