Dehydroalanine has received attention as monomer in the synthesis of polydehydroalanines 12 and as starting material for the synthesis of non-canonical amino acids. To render our process viable for large-scale preparation (17 g scale), we demonstrated the applicability using a setup with six graphite rods instead of two (see Supporting Information for a graphical guide). The reaction proceeded cleanly to afford spectroscopically pure product in 86% yield without further purification. When the conversion stopped at 86% at ~3 F/mol, a simple switch of the electrode polarities resulted in full conversion at 7.6 F/mol, suggesting product adsorption at the electrode surface.