Viviene Chantrain, Tilo Rensch, Wilm Pickhardt, Sven Graetz, Lars Borchardt

Continuous Direct Mechanocatalytic Suzuki‐Miyaura Coupling via Twin‐Screw Extrusion

  • General Chemistry
  • Catalysis
  • Organic Chemistry

This work establishes the first direct mechanocatalytic reaction protocol within an extruder, focusing on the Suzuki‐Miyaura reaction. Through the coating of either the extruder screws or barrel with Pd, we executed the cross‐coupling reaction without the reliance on molecular catalyst compounds or powders, and solvents continuously. We identified the influence and interplay of crucial reaction parameters such as temperature, mechanical energy input, residence time, rheology, and catalyst contact time and finally obtained 36% and 75% of the reaction product after one and four reactor passes respectively.

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