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Article Dans Une Revue Catalysis Science & Technology Année : 2021

Improving the rate of the copper-catalyzed Henry reaction by surface plasmon excitation of gold nanoparticles

Résumé

Green LED plasmon excitation (525 nm) of colloidal gold nanoparticles (NPs), onto which a copper(ii) complex was grafted, in the presence of nitrobenzaldehyde and nitromethane in DMF lead to the formation of the corresponding nitroaldol with high efficiency. Kinetic studies using H-1 NMR and Raman spectroscopies showed that the reaction was faster under irradiation with green light, especially when in close proximity to the NPs (ca. 100% conversion after 100 min). After reaction completion, it was possible to recover the nanocatalyst and run two subsequent reactions. Green LED excitation of plasmonic nanocatalyst is shown to be a straightforward and efficient method for accelerating the rate of the Henry reaction with a lower energy demand and over a shorter reaction time when compared to the reaction performed under classical conditions.
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Dates et versions

hal-03451142 , version 1 (26-11-2021)

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Léa Gimeno, Gennaro Picardi, Aurélien Planchat, D. Andrew Knight, Marc Lamy de La Chapelle, et al.. Improving the rate of the copper-catalyzed Henry reaction by surface plasmon excitation of gold nanoparticles. Catalysis Science & Technology, 2021, 125 (42), pp.23383-23389. ⟨10.1039/d1cy01788h⟩. ⟨hal-03451142⟩
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