Here we report a general electrocatalytic platform enabling a set of HAT-initiated oxidative transformations in undivided cells via electrochemically generated Co IV intermediates (Figure ). Replacing stoichiometric oxidants leads to a more cost-effective and/or safer protocol that generates less waste stream. The scope of the reactions encompasses hydroalkoxylation, hydroacyloxylation, hydroarylation, semi-pinacol rearrangement, and deallylation without the need for tedious optimizations. The relevance of Co IV intermediates was supported by the observed catalyst-controlled stereoselectivity. We commenced our investigation by studying the electrocatalytic intramolecular hydroalkoxylation of 2,2diphenylpent-4-en-1-ol (1a) as the model reaction (Figure ). A set of optimal conditions was identified as shown in entry 1. In methanol at ambient temperature, constant current (5 mA) electrolysis using platinum mesh electrodes was performed in the presence of a catalytic amount of CoSalen complex 3a and diphenylsilane as a hydride source.