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Photocatalyzed Functionalization of Alkenoic Acids in 3D‐Printed Reactors

Von Wiley-VCH zur Verfügung gestellt

Biomass valorization: Alkenoic acids were smoothly converted into valuable γ-keto acids and succinic acid derivatives by decatungstate photocatalyzed addition of selected hydrogen donors (e.g. aldehydes). The adoption of flow conditions and of a 3D-printed reactor allowed to form the derivatized products in up to quantitative yield with a productivity of ≈15 mmol day−1.


Abstract

The valorization of alkenoic acids possibly deriving from biomass (fumaric and citraconic acids) was carried out through conversion in important building blocks, such as γ-keto acids and succinic acid derivatives. The functionalization was carried out by addition onto the C=C double bond of radicals generated under photocatalyzed conditions from suitable hydrogen donors (mainly aldehydes) and by adopting a decatungstate salt as the photocatalyst. Syntheses were performed under batch (in a glass vessel) and flow (by using 3D-printed reactors) conditions. The design of the latter reactors allowed for an improved yield and productivity.

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