Visible-light photooxygenation of α-terpinene in a falling film microreactor

[Display omitted] •The photooxygenation of α-terpinene was investigated and optimized in a falling film microreactor.•The developed procedure allowed for a safe and controllable production of the endoperoxide ascaridole.•Ascaridole was formed with up to 89% yield and a productivity of 2.5–3.2molL−1h...

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Bibliographic Details
Published in:Catalysis today 2018-06, Vol.308, p.102-118
Main Authors: Shvydkiv, Oksana, Jähnisch, Klaus, Steinfeldt, Norbert, Yavorskyy, Alexander, Oelgemöller, Michael
Format: Article
Language:English
Subjects:
Ascaridole
Falling film microreactor
Flow photochemistry
Photooxygenation
Singlet oxygen
α-Terpinene
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Summary:[Display omitted] •The photooxygenation of α-terpinene was investigated and optimized in a falling film microreactor.•The developed procedure allowed for a safe and controllable production of the endoperoxide ascaridole.•Ascaridole was formed with up to 89% yield and a productivity of 2.5–3.2molL−1h−1.•The falling film reactor showed superior performances over a typical laboratory batch system. The photooxygenation of α-terpinene was investigated in a falling film microreactor. The formation of microfilms and the flow operation allowed for a safe and controllable production of the bioactive endoperoxide ascaridole. Stepwise investigation of the process parameters resulted in the selective formation of ascaridole of up to 89% and a productivity of 2.5–3.2molL−1h−1, respectively.
ISSN:0920-5861
1873-4308
DOI:10.1016/j.cattod.2017.11.009