Electrochemical Gold-Catalyzed 1,2-Difunctionalization of C−C Multiple Bonds**

Herein, we disclose the first report of 1,2-difunctionalization of C−C multiple bonds using electrochemical gold redox catalysis. By adopting the electrochemical strategy, the inherent π-activation and cross-coupling reactivity of gold catalysis are harnessed to develop the oxy-alkynylation of allenoates under external-oxidant-free conditions. Detailed mechanistic investigations such as ³¹P NMR, control experiments, mass studies, and cyclic voltammetric (CV) analysis have been performed to support the proposed reaction mechanism.