Using High-Power UV-LED to Accelerate a Decatungstate-Anion-Catalyzed Reaction: A Model Study for the Quick Oxidation of Benzyl Alcohol to Benzoic Acid Using Molecular Oxygen

Mamoru Hyodo; Hitomi Iwano; Takayoshi Kasakado; Takahide Fukuyama; Ilhyong Ryu

doi:10.3390/mi12111307

Micromachines (Oct 2021)

Using High-Power UV-LED to Accelerate a Decatungstate-Anion-Catalyzed Reaction: A Model Study for the Quick Oxidation of Benzyl Alcohol to Benzoic Acid Using Molecular Oxygen

Mamoru Hyodo,
Hitomi Iwano,
Takayoshi Kasakado,
Takahide Fukuyama,
Ilhyong Ryu

Affiliations

Mamoru Hyodo: Organization for Research Promotion, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
Hitomi Iwano: Organization for Research Promotion, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
Takayoshi Kasakado: Organization for Research Promotion, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
Takahide Fukuyama: Department of Chemistry, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
Ilhyong Ryu: Organization for Research Promotion, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan

DOI: https://doi.org/10.3390/mi12111307
Journal volume & issue: Vol. 12, no. 11
p. 1307

Abstract

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High-power UV-LED irradiation (365 nm) effectively accelerated the decatungstate-anion-catalyzed oxidation of benzyl alcohol 1 to benzoic acid 3 via benzaldehyde 2. As the power of the UV-LED light increased, both the selectivity and yield of benzoic acid also increased. The reaction was finished within 1 h to give 3 in a 93% yield using 2 mol% of decatungstate anion catalyst. The combination of a flow photoreactor and high-power irradiation accelerated the oxidation reaction to an interval of only a few minutes.

Published in Micromachines

ISSN: 2072-666X (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mechanical engineering and machinery
Website: https://www.mdpi.com/journal/micromachines

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