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From Batch to Flow: Immobilized Photoredox Systems for Scalable Continuous Processes

Authors: Prokopová Eva | Klikar Milan | Burešová Zuzana | Bartáček Jan | Svoboda Jan | Grygarová Monika | Bureš Filip

Year: 2025

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	From Batch to Flow: Immobilized Photoredox Systems for Scalable Continuous Processes	Photoredox catalysis utilizing visible light has emerged as a highly popular and versatile tool across organic synthesis. However, the homogeneous photoredox protocols developed to date significantly hinders an efficient recovery and reuse of photocatalysts, resulting in substantial environmental and economic burdens. In this respect, immobilization strategies attract increasing attention, primarily due to the enhanced recyclability of the catalysts and their perspective embedding into flow reactors. In our recent study, we reveal that dicyanopyrazine-based organic photocatalyst (DPZ), originally developed by our research group in 2014, undergoes a Mallory-type photocyclization to afford 6,9 dimethoxydithieno[2,3 f:3',2' h]quinoxaline-2,3-dicarbonitrile (DTQ). Herein, we present DTQ’s further structural modifications towards its straightforward immobilization to iDTQ via co polymerization strategy. Catalytic efficiency of both DTQ and iDTQ in homogeneous and heterogeneous photoredox processes under batch and continuous-flow conditions were investigated.	dicyanopyrazine; photocatalyst; photoredox catalysis; immobilization