*Electrochemical Anodic Dehydrogenative Cross-Coupling Reactions*

Reaction parameter optimization of anodic cross-coupling reactions was carried out in undivided 5 mL Teflon cells (self-made by the mechanical workshop at JGU Mainz, Germany; or commercially available from IKA, Staufen, Germany as the IKA Screening System), equipped with a Teflon cap for precise alignment (electrode distance: 4.8 mm) of the electrodes. As the electrode material BDD was used (0.3 × 1.0 × 7.0 cm, 15 µm boron-doped diamond layer on silica, commercially available from CONDIAS GmbH, Itzehoe, Germany, DIACHEMTM). Preparative scale electrolysis reactions were carried out in 25 mL undivided beaker-type glass cells with or without cooling jacket (self-made by the mechanical workshop at JGU Mainz), capped with a Teflon plug for precise alignment (electrode distance: 0.8 cm) of the BDD electrodes (0.3 × 2.0 × 6.0 cm, 15 µm boron-doped diamond layer on silica, commercially available from CONDIAS GmbH, Itzehoe, Germany, DIACHEMTM).
