Electrochemical Dearomative Dihydroxylation and Hydroxycyclization of Indoles

Abstract We describe a simple and sustainable MgBr 2 ‐mediated electrochemical dearomative dihydroxylation and hydroxycyclization reactions of indoles with water. MgBr 2 is used in substoichiometric amount and acts as an electrolyte and potentially as a redox mediator to indirectly oxidize the indole nucleus into a bromonium ion which is involved in the aforementioned reactions. magnified image