High frequency ultrasound as a tool for elucidating mechanistic elements of cis-cyclooctene epoxidation with aqueous hydrogen peroxide

Tony Cousin 1 Gregory Chatel 1 Nathalie Kardos 1 Bruno Andrioletti 2, * Micheline Draye 1, *
* Corresponding author
2 CASYEN - Catalyse Synthèse et Environnement
ICBMS - Institut de Chimie et Biochimie Moléculaires et Supramoléculaires
Abstract : The use of high frequency ultrasound (800 kHz) highlights the non-radical character of the cis-cyclooctene epoxidation mediated by H2O2 and H2WO4. Combination of moderate mixing brought by the ultrasonic irradiation with precise thermoregulation of the double jacketed sonoreactor demonstrates the potential of this technique for studying and optimizing all the reaction parameters. The results not only reveal that the optimized ultrasonic conditions lead to excellent epoxidation outcomes with 96% yield and 98% selectivity but also to higher selectivities toward the epoxidation product compared with silent conditions.
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Journal articles
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http://hal.univ-smb.fr/hal-01979018
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Submitted on : Saturday, January 12, 2019 - 12:30:09 PM
Last modification on : Tuesday, November 19, 2019 - 2:39:28 AM

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Tony Cousin, Gregory Chatel, Nathalie Kardos, Bruno Andrioletti, Micheline Draye. High frequency ultrasound as a tool for elucidating mechanistic elements of cis-cyclooctene epoxidation with aqueous hydrogen peroxide. Ultrasonics Sonochemistry, Elsevier, 2019, 53 (120-125), ⟨10.1016/j.ultsonch.2018.12.038⟩. ⟨hal-01979018⟩

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