<p>Boron-containing compounds are essential building blocks in organic synthesis. A significant advancement in the preparation of alkyl boranes relied on the use of B₂Cat₂ with competent radical precursors under chemical, photochemical, and electrochemical conditions. However, these molecules are unstable and require one-pot formation of corresponding pinacol boranes to be isolated. In this work, we present a continuous flow electrochemical decarboxylative borylation approach telescoped with the exchange from unstable catechol boranes intermediates to isolable pinacol boranes. The study encompassed the optimization of a single-pass protocol employing an electrochemical microreactor, followed by the telescoped pinacol addition. No supporting electrolyte was necessary to successfully execute the process. The continuous-flow approach was validated across 11 examples comprising primary, secondary, and tertiary alkyl carboxylic acids.</p> Graphical Abstract <p></p>